54721956 has 24 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 17611552.

The previous prime is 54721939. The next prime is 54721981. The reversal of 54721956 is 65912745.

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, 78276 + ... + 78971.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^54721956 is an apocalyptic number.

It is an amenable number.

54721956 is an abundant number, since it is smaller than the sum of its proper divisors (77366364).

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

54721956 is a wasteful number, since it uses less digits than its factorization.

54721956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157283 (or 157281 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 54721956 is about 7397.4290128395. The cubic root of 54721956 is about 379.6533218604.

The spelling of 54721956 in words is "fifty-four million, seven hundred twenty-one thousand, nine hundred fifty-six".