255454421 has 4 divisors (see below), whose sum is σ = 255735744. Its totient is φ = 255173100.

The previous prime is 255454403. The next prime is 255454429. The reversal of 255454421 is 124454552.

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 255454421 - 2¹⁰ = 255453397 is a prime.

It is a super-2 number, since 2×255454421² = 130513922416890482, 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 (255454429) 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, 139295 + ... + 141116.

It is an arithmetic number, because the mean of its divisors is an integer number (63933936).

Almost surely, 2^255454421 is an apocalyptic number.

It is an amenable number.

255454421 is a deficient number, since it is larger than the sum of its proper divisors (281323).

255454421 is an equidigital number, since it uses as much as digits as its factorization.

255454421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281322.

The product of its digits is 32000, while the sum is 32.

The square root of 255454421 is about 15982.9415628038. The cubic root of 255454421 is about 634.5090308693.

The spelling of 255454421 in words is "two hundred fifty-five million, four hundred fifty-four thousand, four hundred twenty-one".