54202421 has 64 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 36723456.

The previous prime is 54202417. The next prime is 54202433. The reversal of 54202421 is 12420245.

It is a happy number.

It is not a de Polignac number, because 54202421 - 2² = 54202417 is a prime.

It is a super-2 number, since 2×54202421² = 5875804884522482, 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 = 54202393 and 54202402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54202481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1153220 + ... + 1153266.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^54202421 is an apocalyptic number.

It is an amenable number.

54202421 is a deficient number, since it is larger than the sum of its proper divisors (23211979).

54202421 is a wasteful number, since it uses less digits than its factorization.

54202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 54202421 is about 7362.2293498641. The cubic root of 54202421 is about 378.4480121390.

Adding to 54202421 its reverse (12420245), we get a palindrome (66622666).

The spelling of 54202421 in words is "fifty-four million, two hundred two thousand, four hundred twenty-one".