54152421 has 4 divisors (see below), whose sum is σ = 72203232. Its totient is φ = 36101612.

The previous prime is 54152389. The next prime is 54152447. The reversal of 54152421 is 12425145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54152421 - 2⁵ = 54152389 is a prime.

It is a super-2 number, since 2×54152421² = 5864969400322482, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54152391 and 54152400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54152491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025401 + ... + 9025406.

It is an arithmetic number, because the mean of its divisors is an integer number (18050808).

Almost surely, 2^54152421 is an apocalyptic number.

It is an amenable number.

54152421 is a deficient number, since it is larger than the sum of its proper divisors (18050811).

54152421 is a wasteful number, since it uses less digits than its factorization.

54152421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18050810.

The product of its digits is 1600, while the sum is 24.

The square root of 54152421 is about 7358.8328558271. The cubic root of 54152421 is about 378.3316076090.

Adding to 54152421 its reverse (12425145), we get a palindrome (66577566).

The spelling of 54152421 in words is "fifty-four million, one hundred fifty-two thousand, four hundred twenty-one".