54996891 has 4 divisors (see below), whose sum is σ = 73329192. Its totient is φ = 36664592.

The previous prime is 54996863. The next prime is 54996913. The reversal of 54996891 is 19869945.

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 54996891 - 2⁵ = 54996859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54996391) 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, 9166146 + ... + 9166151.

It is an arithmetic number, because the mean of its divisors is an integer number (18332298).

Almost surely, 2^54996891 is an apocalyptic number.

54996891 is a deficient number, since it is larger than the sum of its proper divisors (18332301).

54996891 is a wasteful number, since it uses less digits than its factorization.

54996891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332300.

The product of its digits is 699840, while the sum is 51.

The square root of 54996891 is about 7415.9888753962. The cubic root of 54996891 is about 380.2880802568.

The spelling of 54996891 in words is "fifty-four million, nine hundred ninety-six thousand, eight hundred ninety-one".