215473461 has 16 divisors (see below), whose sum is σ = 334537344. Its totient is φ = 120803904.

The previous prime is 215473439. The next prime is 215473477. The reversal of 215473461 is 164374512.

It is not a de Polignac number, because 215473461 - 2⁵ = 215473429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215473261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95686 + ... + 97911.

It is an arithmetic number, because the mean of its divisors is an integer number (20908584).

Almost surely, 2^215473461 is an apocalyptic number.

215473461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

215473461 is a deficient number, since it is larger than the sum of its proper divisors (119063883).

215473461 is a wasteful number, since it uses less digits than its factorization.

215473461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193660.

The product of its digits is 20160, while the sum is 33.

The square root of 215473461 is about 14679.0143061447. The cubic root of 215473461 is about 599.5120671991.

The spelling of 215473461 in words is "two hundred fifteen million, four hundred seventy-three thousand, four hundred sixty-one".