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131457500 = 225452583
BaseRepresentation
bin1111101010111…
…10000111011100
3100011100201210022
413311132013130
5232123120000
621013331312
73154241006
oct765360734
9304321708
10131457500
1168227a69
1238036b38
1321309005
141365d376
15b81a585
hex7d5e1dc

131457500 has 30 divisors (see below), whose sum is σ = 287476728. Its totient is φ = 52582000.

The previous prime is 131457497. The next prime is 131457503. The reversal of 131457500 is 5754131.

It is an interprime number because it is at equal distance from previous prime (131457497) and next prime (131457503).

It is a self number, because there is not a number n which added to its sum of digits gives 131457500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131457503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23792 + ... + 28791.

Almost surely, 2131457500 is an apocalyptic number.

131457500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131457500 is an abundant number, since it is smaller than the sum of its proper divisors (156019228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131457500 is an equidigital number, since it uses as much as digits as its factorization.

131457500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52607 (or 52590 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 131457500 is about 11465.4917033680. The cubic root of 131457500 is about 508.4658497718.

The spelling of 131457500 in words is "one hundred thirty-one million, four hundred fifty-seven thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 52583 105166 210332 262915 525830 1051660 1314575 2629150 5258300 6572875 13145750 26291500 32864375 65728750 131457500