54252021 has 8 divisors (see below), whose sum is σ = 72471904. Its totient is φ = 36100080.

The previous prime is 54252017. The next prime is 54252031. The reversal of 54252021 is 12025245.

It is a happy number.

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

It is not a de Polignac number, because 54252021 - 2² = 54252017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54252001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15091 + ... + 18336.

It is an arithmetic number, because the mean of its divisors is an integer number (9058988).

Almost surely, 2^54252021 is an apocalyptic number.

It is an amenable number.

54252021 is a deficient number, since it is larger than the sum of its proper divisors (18219883).

54252021 is a wasteful number, since it uses less digits than its factorization.

54252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33971.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 54252021 is about 7365.5971244700. The cubic root of 54252021 is about 378.5634147247.

Adding to 54252021 its reverse (12025245), we get a palindrome (66277266).

The spelling of 54252021 in words is "fifty-four million, two hundred fifty-two thousand, twenty-one".