215053456 has 20 divisors (see below), whose sum is σ = 416894572. Its totient is φ = 107467776.

The previous prime is 215053453. The next prime is 215053477. The reversal of 215053456 is 654350512.

It can be written as a sum of positive squares in 2 ways, for example, as 160883856 + 54169600 = 12684^2 + 7360^2 .

It is not an unprimeable number, because it can be changed into a prime (215053453) 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, 50980 + ... + 55036.

Almost surely, 2^215053456 is an apocalyptic number.

It is an amenable number.

215053456 is a deficient number, since it is larger than the sum of its proper divisors (201841116).

215053456 is a wasteful number, since it uses less digits than its factorization.

215053456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7378 (or 7372 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 215053456 is about 14664.7010197958. The cubic root of 215053456 is about 599.1222870297.

The spelling of 215053456 in words is "two hundred fifteen million, fifty-three thousand, four hundred fifty-six".