655503057 has 16 divisors (see below), whose sum is σ = 1059399360. Its totient is φ = 397274400.

The previous prime is 655503019. The next prime is 655503089. The reversal of 655503057 is 750305556.

It is not a de Polignac number, because 655503057 - 2¹⁴ = 655486673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655503757) 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, 1103244 + ... + 1103837.

It is an arithmetic number, because the mean of its divisors is an integer number (66212460).

Almost surely, 2^655503057 is an apocalyptic number.

It is an amenable number.

655503057 is a deficient number, since it is larger than the sum of its proper divisors (403896303).

655503057 is a wasteful number, since it uses less digits than its factorization.

655503057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207101 (or 2207095 counting only the distinct ones).

The product of its (nonzero) digits is 78750, while the sum is 36.

The square root of 655503057 is about 25602.7939295695. The cubic root of 655503057 is about 868.6768352579.

The spelling of 655503057 in words is "six hundred fifty-five million, five hundred three thousand, fifty-seven".