53553131 has 4 divisors (see below), whose sum is σ = 55881552. Its totient is φ = 51224712.

The previous prime is 53553127. The next prime is 53553173. The reversal of 53553131 is 13135535.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53553131 - 2² = 53553127 is a prime.

It is a super-2 number, since 2×53553131² = 5735875679806322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53553131.

It is not an unprimeable number, because it can be changed into a prime (53553931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164176 + ... + 1164221.

It is an arithmetic number, because the mean of its divisors is an integer number (13970388).

Almost surely, 2^53553131 is an apocalyptic number.

53553131 is a deficient number, since it is larger than the sum of its proper divisors (2328421).

53553131 is a wasteful number, since it uses less digits than its factorization.

53553131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328420.

The product of its digits is 3375, while the sum is 26.

The square root of 53553131 is about 7318.0004782727. Note that the first 3 decimals coincide. The cubic root of 53553131 is about 376.9307966328.

Adding to 53553131 its reverse (13135535), we get a palindrome (66688666).

The spelling of 53553131 in words is "fifty-three million, five hundred fifty-three thousand, one hundred thirty-one".