54579640 has 16 divisors (see below), whose sum is σ = 122804280. Its totient is φ = 21831840.

The previous prime is 54579593. The next prime is 54579641. The reversal of 54579640 is 4697545.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1364491 = 54579640 / (5 + 4 + 5 + 7 + 9 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 54579593 and 54579602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54579641) 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 3 ways as a sum of consecutive naturals, for example, 682206 + ... + 682285.

Almost surely, 2^54579640 is an apocalyptic number.

It is an amenable number.

54579640 is an abundant number, since it is smaller than the sum of its proper divisors (68224640).

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

54579640 is a wasteful number, since it uses less digits than its factorization.

54579640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364502 (or 1364498 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 54579640 is about 7387.8034624643. The cubic root of 54579640 is about 379.3239132564.

The spelling of 54579640 in words is "fifty-four million, five hundred seventy-nine thousand, six hundred forty".