315222455 has 4 divisors (see below), whose sum is σ = 378266952. Its totient is φ = 252177960.

The previous prime is 315222437. The next prime is 315222469. The reversal of 315222455 is 554222513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315222455 - 2¹⁸ = 314960311 is a prime.

It is a super-2 number, since 2×315222455² = 198730392272454050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31522241 + ... + 31522250.

It is an arithmetic number, because the mean of its divisors is an integer number (94566738).

Almost surely, 2^315222455 is an apocalyptic number.

315222455 is a deficient number, since it is larger than the sum of its proper divisors (63044497).

315222455 is an equidigital number, since it uses as much as digits as its factorization.

315222455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63044496.

The product of its digits is 12000, while the sum is 29.

The square root of 315222455 is about 17754.5052029055. The cubic root of 315222455 is about 680.5693436742.

Adding to 315222455 its reverse (554222513), we get a palindrome (869444968).

The spelling of 315222455 in words is "three hundred fifteen million, two hundred twenty-two thousand, four hundred fifty-five".