52740531 has 32 divisors (see below), whose sum is σ = 81480000. Its totient is φ = 33675264.

The previous prime is 52740521. The next prime is 52740551. The reversal of 52740531 is 13504725.

It is a happy number.

It is not a de Polignac number, because 52740531 - 2²⁵ = 19186099 is a prime.

It is a super-2 number, since 2×52740531² = 5563127220323922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 52740495 and 52740504.

It is not an unprimeable number, because it can be changed into a prime (52740521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150945 + ... + 151293.

It is an arithmetic number, because the mean of its divisors is an integer number (2546250).

Almost surely, 2^52740531 is an apocalyptic number.

52740531 is a deficient number, since it is larger than the sum of its proper divisors (28739469).

52740531 is a wasteful number, since it uses less digits than its factorization.

52740531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 52740531 is about 7262.2676210671. The cubic root of 52740531 is about 375.0145914322.

The spelling of 52740531 in words is "fifty-two million, seven hundred forty thousand, five hundred thirty-one".