53190891 has 24 divisors (see below), whose sum is σ = 85336560. Its totient is φ = 32730048.

The previous prime is 53190791. The next prime is 53190911. The reversal of 53190891 is 19809135.

It is a happy number.

It is not a de Polignac number, because 53190891 - 2¹¹ = 53188843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53190091) 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, 1266 + ... + 10391.

It is an arithmetic number, because the mean of its divisors is an integer number (3555690).

Almost surely, 2^53190891 is an apocalyptic number.

53190891 is a deficient number, since it is larger than the sum of its proper divisors (32145669).

53190891 is a wasteful number, since it uses less digits than its factorization.

53190891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11692 (or 11673 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 53190891 is about 7293.2085531678. The cubic root of 53190891 is about 376.0790043545.

The spelling of 53190891 in words is "fifty-three million, one hundred ninety thousand, eight hundred ninety-one".