655255157 has 4 divisors (see below), whose sum is σ = 693799596. Its totient is φ = 616710720.

The previous prime is 655255127. The next prime is 655255169. The reversal of 655255157 is 751552556.

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 261986596 + 393268561 = 16186^2 + 19831^2 .

It is a cyclic number.

It is not a de Polignac number, because 655255157 - 2⁶ = 655255093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655255127) 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, 19272194 + ... + 19272227.

It is an arithmetic number, because the mean of its divisors is an integer number (173449899).

Almost surely, 2^655255157 is an apocalyptic number.

It is an amenable number.

655255157 is a deficient number, since it is larger than the sum of its proper divisors (38544439).

655255157 is a wasteful number, since it uses less digits than its factorization.

655255157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38544438.

The product of its digits is 262500, while the sum is 41.

The square root of 655255157 is about 25597.9522032525. The cubic root of 655255157 is about 868.5673152297.

The spelling of 655255157 in words is "six hundred fifty-five million, two hundred fifty-five thousand, one hundred fifty-seven".