54372021 has 16 divisors (see below), whose sum is σ = 79210560. Its totient is φ = 32901120.

The previous prime is 54372007. The next prime is 54372029. The reversal of 54372021 is 12027345.

It is not a de Polignac number, because 54372021 - 2⁷ = 54371893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54371982 and 54372000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54372029) 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, 37335 + ... + 38763.

It is an arithmetic number, because the mean of its divisors is an integer number (4950660).

Almost surely, 2^54372021 is an apocalyptic number.

It is an amenable number.

54372021 is a deficient number, since it is larger than the sum of its proper divisors (24838539).

54372021 is a wasteful number, since it uses less digits than its factorization.

54372021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 54372021 is about 7373.7386039919. The cubic root of 54372021 is about 378.8423238864.

Adding to 54372021 its reverse (12027345), we get a palindrome (66399366).

The spelling of 54372021 in words is "fifty-four million, three hundred seventy-two thousand, twenty-one".