54502421 has 2 divisors, whose sum is σ = 54502422. Its totient is φ = 54502420.

The previous prime is 54502417. The next prime is 54502429. The reversal of 54502421 is 12420545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 15689521 = 6230^2 + 3961^2 .

It is a cyclic number.

It is not a de Polignac number, because 54502421 - 2² = 54502417 is a prime.

It is a super-2 number, since 2×54502421² = 5941027789722482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54502429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27251210 + 27251211.

It is an arithmetic number, because the mean of its divisors is an integer number (27251211).

Almost surely, 2^54502421 is an apocalyptic number.

It is an amenable number.

54502421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54502421 is an equidigital number, since it uses as much as digits as its factorization.

54502421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 54502421 is about 7382.5754991060. The cubic root of 54502421 is about 379.1449403054.

Adding to 54502421 its reverse (12420545), we get a palindrome (66922966).

The spelling of 54502421 in words is "fifty-four million, five hundred two thousand, four hundred twenty-one".