657395052 has 48 divisors (see below), whose sum is σ = 1589489664. Its totient is φ = 211248000.

The previous prime is 657395047. The next prime is 657395059. The reversal of 657395052 is 250593756.

It is a junction number, because it is equal to n+sod(n) for n = 657394995 and 657395013.

It is not an unprimeable number, because it can be changed into a prime (657395059) 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, 97552 + ... + 104072.

It is an arithmetic number, because the mean of its divisors is an integer number (33114368).

Almost surely, 2^657395052 is an apocalyptic number.

657395052 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

657395052 is an abundant number, since it is smaller than the sum of its proper divisors (932094612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

657395052 is a wasteful number, since it uses less digits than its factorization.

657395052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 42.

The square root of 657395052 is about 25639.7163010826. The cubic root of 657395052 is about 869.5117937354.

The spelling of 657395052 in words is "six hundred fifty-seven million, three hundred ninety-five thousand, fifty-two".