54990823 has 4 divisors (see below), whose sum is σ = 55009288. Its totient is φ = 54972360.

The previous prime is 54990811. The next prime is 54990847. The reversal of 54990823 is 32809945.

It is a happy number.

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 54990823 - 2⁵ = 54990791 is a prime.

It is a super-2 number, since 2×54990823² = 6047981228434658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54990323) 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, 3633 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (13752322).

Almost surely, 2^54990823 is an apocalyptic number.

54990823 is a deficient number, since it is larger than the sum of its proper divisors (18465).

54990823 is a wasteful number, since it uses less digits than its factorization.

54990823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 54990823 is about 7415.5797480709. The cubic root of 54990823 is about 380.2740935695.

The spelling of 54990823 in words is "fifty-four million, nine hundred ninety thousand, eight hundred twenty-three".