53523131 has 4 divisors (see below), whose sum is σ = 54168072. Its totient is φ = 52878192.

The previous prime is 53523121. The next prime is 53523149. The reversal of 53523131 is 13132535.

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 53523131 - 2²² = 49328827 is a prime.

It is a super-2 number, since 2×53523131² = 5729451104086322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53523097 and 53523106.

It is not an unprimeable number, because it can be changed into a prime (53523121) 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, 322346 + ... + 322511.

It is an arithmetic number, because the mean of its divisors is an integer number (13542018).

Almost surely, 2^53523131 is an apocalyptic number.

53523131 is a deficient number, since it is larger than the sum of its proper divisors (644941).

53523131 is an equidigital number, since it uses as much as digits as its factorization.

53523131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644940.

The product of its digits is 1350, while the sum is 23.

The square root of 53523131 is about 7315.9504508984. The cubic root of 53523131 is about 376.8603990302.

Adding to 53523131 its reverse (13132535), we get a palindrome (66655666).

The spelling of 53523131 in words is "fifty-three million, five hundred twenty-three thousand, one hundred thirty-one".