54721340 has 12 divisors (see below), whose sum is σ = 114914856. Its totient is φ = 21888528.

The previous prime is 54721339. The next prime is 54721363. The reversal of 54721340 is 4312745.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368014 + ... + 1368053.

It is an arithmetic number, because the mean of its divisors is an integer number (9576238).

Almost surely, 2^54721340 is an apocalyptic number.

It is an amenable number.

54721340 is an abundant number, since it is smaller than the sum of its proper divisors (60193516).

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

54721340 is a wasteful number, since it uses less digits than its factorization.

54721340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736076 (or 2736074 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 54721340 is about 7397.3873766351. The cubic root of 54721340 is about 379.6518972810.

The spelling of 54721340 in words is "fifty-four million, seven hundred twenty-one thousand, three hundred forty".