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131252255 = 526250451
BaseRepresentation
bin1111101001011…
…00000000011111
3100010222022020122
413310230000133
5232100033010
621005105155
73152424431
oct764540037
9303868218
10131252255
11680a7842
1237b581bb
1321266774
1413608651
15b7c9855
hex7d2c01f

131252255 has 4 divisors (see below), whose sum is σ = 157502712. Its totient is φ = 105001800.

The previous prime is 131252239. The next prime is 131252293. The reversal of 131252255 is 552252131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552252131 = 1134887187.

It is not a de Polignac number, because 131252255 - 24 = 131252239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13125221 + ... + 13125230.

It is an arithmetic number, because the mean of its divisors is an integer number (39375678).

Almost surely, 2131252255 is an apocalyptic number.

131252255 is a deficient number, since it is larger than the sum of its proper divisors (26250457).

131252255 is an equidigital number, since it uses as much as digits as its factorization.

131252255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26250456.

The product of its digits is 3000, while the sum is 26.

The square root of 131252255 is about 11456.5376532354. The cubic root of 131252255 is about 508.2010888337.

The spelling of 131252255 in words is "one hundred thirty-one million, two hundred fifty-two thousand, two hundred fifty-five".

Divisors: 1 5 26250451 131252255