531645051 has 12 divisors (see below), whose sum is σ = 824592552. Its totient is φ = 303797088.

The previous prime is 531645043. The next prime is 531645083. The reversal of 531645051 is 150546135.

It is not a de Polignac number, because 531645051 - 2³ = 531645043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531645041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1808170 + ... + 1808463.

It is an arithmetic number, because the mean of its divisors is an integer number (68716046).

Almost surely, 2^531645051 is an apocalyptic number.

531645051 is a deficient number, since it is larger than the sum of its proper divisors (292947501).

531645051 is a wasteful number, since it uses less digits than its factorization.

531645051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616650 (or 3616643 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 531645051 is about 23057.4294100622. The cubic root of 531645051 is about 810.1036553828.

The spelling of 531645051 in words is "five hundred thirty-one million, six hundred forty-five thousand, fifty-one".