531058661 has 16 divisors (see below), whose sum is σ = 634093824. Its totient is φ = 434865024.

The previous prime is 531058657. The next prime is 531058679. The reversal of 531058661 is 166850135.

It is a cyclic number.

It is not a de Polignac number, because 531058661 - 2² = 531058657 is a prime.

It is a super-2 number, since 2×531058661² = 564046602846225842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531058601) 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, 178361 + ... + 181313.

It is an arithmetic number, because the mean of its divisors is an integer number (39630864).

Almost surely, 2^531058661 is an apocalyptic number.

It is an amenable number.

531058661 is a deficient number, since it is larger than the sum of its proper divisors (103035163).

531058661 is a wasteful number, since it uses less digits than its factorization.

531058661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 531058661 is about 23044.7100437389. The cubic root of 531058661 is about 809.8057050620.

The spelling of 531058661 in words is "five hundred thirty-one million, fifty-eight thousand, six hundred sixty-one".