54992640 has 72 divisors (see below), whose sum is σ = 175645008. Its totient is φ = 14663680.

The previous prime is 54992591. The next prime is 54992647. The reversal of 54992640 is 4629945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54992647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (2439514).

Almost surely, 2^54992640 is an apocalyptic number.

It is an amenable number.

54992640 is an abundant number, since it is smaller than the sum of its proper divisors (120652368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54992640 is a wasteful number, since it uses less digits than its factorization.

54992640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345 (or 14331 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 54992640 is about 7415.7022593953. The cubic root of 54992640 is about 380.2782818466.

The spelling of 54992640 in words is "fifty-four million, nine hundred ninety-two thousand, six hundred forty".