215051456 has 28 divisors (see below), whose sum is σ = 429231552. Its totient is φ = 106898688.

The previous prime is 215051453. The next prime is 215051467. The reversal of 215051456 is 654150512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (215051453) 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, 1361 + ... + 20783.

Almost surely, 2^215051456 is an apocalyptic number.

It is an amenable number.

215051456 is a deficient number, since it is larger than the sum of its proper divisors (214180096).

215051456 is a wasteful number, since it uses less digits than its factorization.

215051456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19608 (or 19598 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 215051456 is about 14664.6328286800. The cubic root of 215051456 is about 599.1204297422.

The spelling of 215051456 in words is "two hundred fifteen million, fifty-one thousand, four hundred fifty-six".