531889656 has 32 divisors (see below), whose sum is σ = 1337696640. Its totient is φ = 176233568.

The previous prime is 531889643. The next prime is 531889669. The reversal of 531889656 is 656988135.

It is an interprime number because it is at equal distance from previous prime (531889643) and next prime (531889669).

It is a junction number, because it is equal to n+sod(n) for n = 531889599 and 531889608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62346 + ... + 70361.

It is an arithmetic number, because the mean of its divisors is an integer number (41803020).

Almost surely, 2^531889656 is an apocalyptic number.

It is an amenable number.

531889656 is an abundant number, since it is smaller than the sum of its proper divisors (805806984).

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

531889656 is a wasteful number, since it uses less digits than its factorization.

531889656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132883 (or 132879 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 531889656 is about 23062.7330557330. The cubic root of 531889656 is about 810.2278767483.

The spelling of 531889656 in words is "five hundred thirty-one million, eight hundred eighty-nine thousand, six hundred fifty-six".