53012531 has 16 divisors (see below), whose sum is σ = 62506080. Its totient is φ = 44325120.

The previous prime is 53012521. The next prime is 53012567. The reversal of 53012531 is 13521035.

It is a cyclic number.

It is not a de Polignac number, because 53012531 - 2¹⁴ = 52996147 is a prime.

It is a super-2 number, since 2×53012531² = 5620656886051922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53012501) 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, 55151 + ... + 56103.

It is an arithmetic number, because the mean of its divisors is an integer number (3906630).

Almost surely, 2^53012531 is an apocalyptic number.

53012531 is a deficient number, since it is larger than the sum of its proper divisors (9493549).

53012531 is a wasteful number, since it uses less digits than its factorization.

53012531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 53012531 is about 7280.9704710293. The cubic root of 53012531 is about 375.6581768734.

Adding to 53012531 its reverse (13521035), we get a palindrome (66533566).

The spelling of 53012531 in words is "fifty-three million, twelve thousand, five hundred thirty-one".