53253531 has 10 divisors (see below), whose sum is σ = 79551692. Its totient is φ = 35502300.

The previous prime is 53253521. The next prime is 53253539. The reversal of 53253531 is 13535235.

It is not a de Polignac number, because 53253531 - 2⁶ = 53253467 is a prime.

It is a super-2 number, since 2×53253531² = 5671877127935922, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53253495 and 53253504.

It is not an unprimeable number, because it can be changed into a prime (53253539) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 328645 + ... + 328806.

Almost surely, 2^53253531 is an apocalyptic number.

53253531 is a deficient number, since it is larger than the sum of its proper divisors (26298161).

53253531 is an equidigital number, since it uses as much as digits as its factorization.

53253531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657463 (or 657454 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 53253531 is about 7297.5016957860. The cubic root of 53253531 is about 376.2265756582.

Adding to 53253531 its reverse (13535235), we get a palindrome (66788766).

The spelling of 53253531 in words is "fifty-three million, two hundred fifty-three thousand, five hundred thirty-one".