54639620 has 48 divisors (see below), whose sum is σ = 131580288. Its totient is φ = 18670080.

The previous prime is 54639601. The next prime is 54639653. The reversal of 54639620 is 2693645.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61580 + ... + 62460.

It is an arithmetic number, because the mean of its divisors is an integer number (2741256).

Almost surely, 2^54639620 is an apocalyptic number.

It is an amenable number.

54639620 is an abundant number, since it is smaller than the sum of its proper divisors (76940668).

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

54639620 is a wasteful number, since it uses less digits than its factorization.

54639620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 54639620 is about 7391.8617411313. The cubic root of 54639620 is about 379.4628143745.

The spelling of 54639620 in words is "fifty-four million, six hundred thirty-nine thousand, six hundred twenty".