53023531 has 6 divisors (see below), whose sum is σ = 58282196. Its totient is φ = 48203100.

The previous prime is 53023483. The next prime is 53023541. The reversal of 53023531 is 13532035.

It is a happy number.

It is not a de Polignac number, because 53023531 - 2¹⁷ = 52892459 is a prime.

It is a super-2 number, since 2×53023531² = 5622989679415922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53023541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218985 + ... + 219226.

Almost surely, 2^53023531 is an apocalyptic number.

53023531 is a deficient number, since it is larger than the sum of its proper divisors (5258665).

53023531 is a wasteful number, since it uses less digits than its factorization.

53023531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438233 (or 438222 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 53023531 is about 7281.7258256542. The cubic root of 53023531 is about 375.6841578638.

Adding to 53023531 its reverse (13532035), we get a palindrome (66555566).

The spelling of 53023531 in words is "fifty-three million, twenty-three thousand, five hundred thirty-one".