54235021 has 8 divisors (see below), whose sum is σ = 55055000. Its totient is φ = 53421120.

The previous prime is 54235019. The next prime is 54235037. The reversal of 54235021 is 12053245.

It can be written as a sum of positive squares in 4 ways, for example, as 212521 + 54022500 = 461^2 + 7350^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 54235021 - 2¹ = 54235019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54234983 and 54235001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54235061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18355 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (6881875).

Almost surely, 2^54235021 is an apocalyptic number.

It is an amenable number.

54235021 is a deficient number, since it is larger than the sum of its proper divisors (819979).

54235021 is a wasteful number, since it uses less digits than its factorization.

54235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 54235021 is about 7364.4430203512. The cubic root of 54235021 is about 378.5238693446.

Adding to 54235021 its reverse (12053245), we get a palindrome (66288266).

The spelling of 54235021 in words is "fifty-four million, two hundred thirty-five thousand, twenty-one".