53489931 has 32 divisors (see below), whose sum is σ = 80317440. Its totient is φ = 31389600.

The previous prime is 53489861. The next prime is 53489941. The reversal of 53489931 is 13998435.

53489931 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 53489931 - 2⁹ = 53489419 is a prime.

It is a super-2 number, since 2×53489931² = 5722345436769522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53489941) 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, 161436 + ... + 161766.

It is an arithmetic number, because the mean of its divisors is an integer number (2509920).

Almost surely, 2^53489931 is an apocalyptic number.

53489931 is a deficient number, since it is larger than the sum of its proper divisors (26827509).

53489931 is a wasteful number, since it uses less digits than its factorization.

53489931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its digits is 116640, while the sum is 42.

The square root of 53489931 is about 7313.6810841053. The cubic root of 53489931 is about 376.7824616793.

It can be divided in two parts, 53 and 489931, that added together give a palindrome (489984).

The spelling of 53489931 in words is "fifty-three million, four hundred eighty-nine thousand, nine hundred thirty-one".