254502421 has 4 divisors (see below), whose sum is σ = 254826592. Its totient is φ = 254178252.

The previous prime is 254502419. The next prime is 254502439. The reversal of 254502421 is 124205452.

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 254502421 - 2¹ = 254502419 is a prime.

It is a super-2 number, since 2×254502421² = 129542964589722482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254502401) 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, 160905 + ... + 162478.

It is an arithmetic number, because the mean of its divisors is an integer number (63706648).

Almost surely, 2^254502421 is an apocalyptic number.

It is an amenable number.

254502421 is a deficient number, since it is larger than the sum of its proper divisors (324171).

254502421 is an equidigital number, since it uses as much as digits as its factorization.

254502421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324170.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 254502421 is about 15953.1320122414. The cubic root of 254502421 is about 633.7198430823.

Adding to 254502421 its reverse (124205452), we get a palindrome (378707873).

The spelling of 254502421 in words is "two hundred fifty-four million, five hundred two thousand, four hundred twenty-one".