54921251 has 16 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 42499680.

The previous prime is 54921241. The next prime is 54921253. The reversal of 54921251 is 15212945.

It is a cyclic number.

It is not a de Polignac number, because 54921251 - 2⁶ = 54921187 is a prime.

It is a super-2 number, since 2×54921251² = 6032687622810002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54921253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9080 + ... + 13866.

It is an arithmetic number, because the mean of its divisors is an integer number (4309200).

Almost surely, 2^54921251 is an apocalyptic number.

54921251 is a deficient number, since it is larger than the sum of its proper divisors (14025949).

54921251 is a wasteful number, since it uses less digits than its factorization.

54921251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954.

The product of its digits is 3600, while the sum is 29.

The square root of 54921251 is about 7410.8873287886. The cubic root of 54921251 is about 380.1136571378.

The spelling of 54921251 in words is "fifty-four million, nine hundred twenty-one thousand, two hundred fifty-one".