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53812369 = 139834211
BaseRepresentation
bin1100110101000…
…1110010010001
310202020221200201
43031101302101
5102233443434
65201215201
71222253242
oct315216221
9122227621
1053812369
1128415036
1216031501
13b1c1750
14720acc9
154ace614
hex3351c91

53812369 has 8 divisors (see below), whose sum is σ = 58024512. Its totient is φ = 49610640.

The previous prime is 53812301. The next prime is 53812397. The reversal of 53812369 is 96321835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53812369 is a prime.

It is a super-2 number, since 2×538123692 = 5791542114784322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53810369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10674 + ... + 14884.

It is an arithmetic number, because the mean of its divisors is an integer number (7253064).

Almost surely, 253812369 is an apocalyptic number.

It is an amenable number.

53812369 is a deficient number, since it is larger than the sum of its proper divisors (4212143).

53812369 is a wasteful number, since it uses less digits than its factorization.

53812369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207.

The product of its digits is 38880, while the sum is 37.

The square root of 53812369 is about 7335.6914466191. The cubic root of 53812369 is about 377.5380287114.

It can be divided in two parts, 5381 and 2369, that added together give a triangular number (7750 = T124).

The spelling of 53812369 in words is "fifty-three million, eight hundred twelve thousand, three hundred sixty-nine".

Divisors: 1 13 983 4211 12779 54743 4139413 53812369