54057321 has 32 divisors (see below), whose sum is σ = 82938240. Its totient is φ = 34776000.

The previous prime is 54057317. The next prime is 54057343. The reversal of 54057321 is 12375045.

It is a happy number.

It is not a de Polignac number, because 54057321 - 2² = 54057317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (54057301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117031 + ... + 117491.

It is an arithmetic number, because the mean of its divisors is an integer number (2591820).

Almost surely, 2^54057321 is an apocalyptic number.

It is an amenable number.

54057321 is a deficient number, since it is larger than the sum of its proper divisors (28880919).

54057321 is a wasteful number, since it uses less digits than its factorization.

54057321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 54057321 is about 7352.3683939259. The cubic root of 54057321 is about 378.1100082939.

The spelling of 54057321 in words is "fifty-four million, fifty-seven thousand, three hundred twenty-one".