53433531 has 24 divisors (see below), whose sum is σ = 80904096. Its totient is φ = 33918720.

The previous prime is 53433521. The next prime is 53433539. The reversal of 53433531 is 13533435.

It is a happy number.

It is not a de Polignac number, because 53433531 - 2⁷ = 53433403 is a prime.

It is a super-2 number, since 2×53433531² = 5710284470255922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53433495 and 53433504.

It is not an unprimeable number, because it can be changed into a prime (53433539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60211 + ... + 61091.

It is an arithmetic number, because the mean of its divisors is an integer number (3371004).

Almost surely, 2^53433531 is an apocalyptic number.

53433531 is a deficient number, since it is larger than the sum of its proper divisors (27470565).

53433531 is a wasteful number, since it uses less digits than its factorization.

53433531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1200 counting only the distinct ones).

The product of its digits is 8100, while the sum is 27.

The square root of 53433531 is about 7309.8242796937. The cubic root of 53433531 is about 376.6499881234.

Adding to 53433531 its reverse (13533435), we get a palindrome (66966966).

The spelling of 53433531 in words is "fifty-three million, four hundred thirty-three thousand, five hundred thirty-one".