255247157 has 16 divisors (see below), whose sum is σ = 284083200. Its totient is φ = 227376240.

The previous prime is 255247147. The next prime is 255247189. The reversal of 255247157 is 751742552.

It is a cyclic number.

It is not a de Polignac number, because 255247157 - 2²² = 251052853 is a prime.

It is a super-2 number, since 2×255247157² = 130302222313165298, which contains 22 as substring.

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 255247157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255247117) 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, 354644 + ... + 355362.

It is an arithmetic number, because the mean of its divisors is an integer number (17755200).

Almost surely, 2^255247157 is an apocalyptic number.

It is an amenable number.

255247157 is a deficient number, since it is larger than the sum of its proper divisors (28836043).

255247157 is a wasteful number, since it uses less digits than its factorization.

255247157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 98000, while the sum is 38.

The square root of 255247157 is about 15976.4563342438. The cubic root of 255247157 is about 634.3373805965.

The spelling of 255247157 in words is "two hundred fifty-five million, two hundred forty-seven thousand, one hundred fifty-seven".