54636820 has 24 divisors (see below), whose sum is σ = 131128704. Its totient is φ = 18732576.

The previous prime is 54636817. The next prime is 54636821. The reversal of 54636820 is 2863645.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54636821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194992 + ... + 195271.

It is an arithmetic number, because the mean of its divisors is an integer number (5463696).

Almost surely, 2^54636820 is an apocalyptic number.

It is an amenable number.

54636820 is an abundant number, since it is smaller than the sum of its proper divisors (76491884).

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

54636820 is a wasteful number, since it uses less digits than its factorization.

54636820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390279 (or 390277 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 54636820 is about 7391.6723412229. The cubic root of 54636820 is about 379.4563324235.

The spelling of 54636820 in words is "fifty-four million, six hundred thirty-six thousand, eight hundred twenty".