54721000 has 32 divisors (see below), whose sum is σ = 128049480. Its totient is φ = 21888000.

The previous prime is 54720989. The next prime is 54721021. The reversal of 54721000 is 12745.

It can be written as a sum of positive squares in 4 ways, for example, as 22071204 + 32649796 = 4698^2 + 5714^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26361 + ... + 28360.

Almost surely, 2^54721000 is an apocalyptic number.

54721000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

54721000 is an abundant number, since it is smaller than the sum of its proper divisors (73328480).

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

54721000 is a wasteful number, since it uses less digits than its factorization.

54721000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54742 (or 54728 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 54721000 is about 7397.3643955128. The cubic root of 54721000 is about 379.6511109825.

Adding to 54721000 its reverse (12745), we get a palindrome (54733745).

The spelling of 54721000 in words is "fifty-four million, seven hundred twenty-one thousand".