255160621 has 16 divisors (see below), whose sum is σ = 268697088. Its totient is φ = 242049600.

The previous prime is 255160601. The next prime is 255160649. The reversal of 255160621 is 126061552.

It is a 3-Lehmer number, since φ(255160621) divides (255160621-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 255160621 - 2⁹ = 255160109 is a prime.

It is a deceptive number, since it divides R_255160620.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255160621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255160601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295236 + ... + 296098.

It is an arithmetic number, because the mean of its divisors is an integer number (16793568).

It is a Poulet number, since it divides 2^255160620-1.

Almost surely, 2^255160621 is an apocalyptic number.

It is an amenable number.

255160621 is a deficient number, since it is larger than the sum of its proper divisors (13536467).

255160621 is a wasteful number, since it uses less digits than its factorization.

255160621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 255160621 is about 15973.7478695515. The cubic root of 255160621 is about 634.2656863939.

The spelling of 255160621 in words is "two hundred fifty-five million, one hundred sixty thousand, six hundred twenty-one".