354420251 has 2 divisors, whose sum is σ = 354420252. Its totient is φ = 354420250.

The previous prime is 354420247. The next prime is 354420289. The reversal of 354420251 is 152024453.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 354420251 - 2² = 354420247 is a prime.

It is a super-2 number, since 2×354420251² = 251227428637806002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 354420251.

It is not a weakly prime, because it can be changed into another prime (354720251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177210125 + 177210126.

It is an arithmetic number, because the mean of its divisors is an integer number (177210126).

Almost surely, 2^354420251 is an apocalyptic number.

354420251 is a deficient number, since it is larger than the sum of its proper divisors (1).

354420251 is an equidigital number, since it uses as much as digits as its factorization.

354420251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 354420251 is about 18826.0524539798. The cubic root of 354420251 is about 707.6842164527.

The spelling of 354420251 in words is "three hundred fifty-four million, four hundred twenty thousand, two hundred fifty-one".