215790051 has 8 divisors (see below), whose sum is σ = 287872000. Its totient is φ = 143784072.

The previous prime is 215790013. The next prime is 215790053. The reversal of 215790051 is 150097512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215790051 - 2¹¹ = 215788003 is a prime.

It is a super-2 number, since 2×215790051² = 93130692221165202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215790053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11995 + ... + 23988.

It is an arithmetic number, because the mean of its divisors is an integer number (35984000).

Almost surely, 2^215790051 is an apocalyptic number.

215790051 is a deficient number, since it is larger than the sum of its proper divisors (72081949).

215790051 is a wasteful number, since it uses less digits than its factorization.

215790051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37985.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 215790051 is about 14689.7941101977. The cubic root of 215790051 is about 599.8055397599.

The spelling of 215790051 in words is "two hundred fifteen million, seven hundred ninety thousand, fifty-one".