255157499 has 4 divisors (see below), whose sum is σ = 256782864. Its totient is φ = 253532136.

The previous prime is 255157489. The next prime is 255157537. The reversal of 255157499 is 994751552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255157499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255157459) 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, 812447 + ... + 812760.

It is an arithmetic number, because the mean of its divisors is an integer number (64195716).

Almost surely, 2^255157499 is an apocalyptic number.

255157499 is a deficient number, since it is larger than the sum of its proper divisors (1625365).

255157499 is a wasteful number, since it uses less digits than its factorization.

255157499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625364.

The product of its digits is 567000, while the sum is 47.

The square root of 255157499 is about 15973.6501464130. The cubic root of 255157499 is about 634.2630995455.

The spelling of 255157499 in words is "two hundred fifty-five million, one hundred fifty-seven thousand, four hundred ninety-nine".