54021538 has 8 divisors (see below), whose sum is σ = 81231660. Its totient is φ = 26944320.

The previous prime is 54021511. The next prime is 54021553. The reversal of 54021538 is 83512045.

It can be written as a sum of positive squares in 2 ways, for example, as 51451929 + 2569609 = 7173^2 + 1603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 32203 + ... + 33838.

Almost surely, 2^54021538 is an apocalyptic number.

54021538 is a deficient number, since it is larger than the sum of its proper divisors (27210122).

54021538 is a wasteful number, since it uses less digits than its factorization.

54021538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66452.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 54021538 is about 7349.9345575318. The cubic root of 54021538 is about 378.0265604733.

The spelling of 54021538 in words is "fifty-four million, twenty-one thousand, five hundred thirty-eight".