255492757 has 4 divisors (see below), whose sum is σ = 275146060. Its totient is φ = 235839456.

The previous prime is 255492749. The next prime is 255492767. The reversal of 255492757 is 757294552.

255492757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96707556 + 158785201 = 9834^2 + 12601^2 .

It is a cyclic number.

It is not a de Polignac number, because 255492757 - 2³ = 255492749 is a prime.

It is a super-2 number, since 2×255492757² = 130553097758922098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255492707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9826632 + ... + 9826657.

It is an arithmetic number, because the mean of its divisors is an integer number (68786515).

Almost surely, 2^255492757 is an apocalyptic number.

It is an amenable number.

255492757 is a deficient number, since it is larger than the sum of its proper divisors (19653303).

255492757 is a wasteful number, since it uses less digits than its factorization.

255492757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653302.

The product of its digits is 882000, while the sum is 46.

The square root of 255492757 is about 15984.1407964269. The cubic root of 255492757 is about 634.5407695012.

The spelling of 255492757 in words is "two hundred fifty-five million, four hundred ninety-two thousand, seven hundred fifty-seven".