53958891 has 16 divisors (see below), whose sum is σ = 82646784. Its totient is φ = 30674784.

The previous prime is 53958787. The next prime is 53958893. The reversal of 53958891 is 19885935.

It is not a de Polignac number, because 53958891 - 2¹¹ = 53956843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53958891.

It is not an unprimeable number, because it can be changed into a prime (53958893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385 + ... + 10658.

It is an arithmetic number, because the mean of its divisors is an integer number (5165424).

Almost surely, 2^53958891 is an apocalyptic number.

53958891 is a deficient number, since it is larger than the sum of its proper divisors (28687893).

53958891 is a wasteful number, since it uses less digits than its factorization.

53958891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250.

The product of its digits is 388800, while the sum is 48.

The square root of 53958891 is about 7345.6715826397. The cubic root of 53958891 is about 377.8803756291.

The spelling of 53958891 in words is "fifty-three million, nine hundred fifty-eight thousand, eight hundred ninety-one".