531400616 has 16 divisors (see below), whose sum is σ = 997213140. Its totient is φ = 265477120.

The previous prime is 531400613. The next prime is 531400619. The reversal of 531400616 is 616004135.

It is an interprime number because it is at equal distance from previous prime (531400613) and next prime (531400619).

It can be written as a sum of positive squares in 2 ways, for example, as 522122500 + 9278116 = 22850^2 + 3046^2 .

It is a super-2 number, since 2×531400616² = 564773229370358912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531400613) 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, 17555 + ... + 37026.

Almost surely, 2^531400616 is an apocalyptic number.

It is an amenable number.

531400616 is a deficient number, since it is larger than the sum of its proper divisors (465812524).

531400616 is a wasteful number, since it uses less digits than its factorization.

531400616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55804 (or 55800 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 531400616 is about 23052.1282314670. The cubic root of 531400616 is about 809.9794822827.

The spelling of 531400616 in words is "five hundred thirty-one million, four hundred thousand, six hundred sixteen".