61056215 has 16 divisors (see below), whose sum is σ = 84136320. Its totient is φ = 42066720.

The previous prime is 61056199. The next prime is 61056221. The reversal of 61056215 is 51265016.

It is not a de Polignac number, because 61056215 - 2⁴ = 61056199 is a prime.

It is a super-2 number, since 2×61056215² = 7455722780252450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28169 + ... + 30258.

It is an arithmetic number, because the mean of its divisors is an integer number (5258520).

Almost surely, 2^61056215 is an apocalyptic number.

61056215 is a deficient number, since it is larger than the sum of its proper divisors (23080105).

61056215 is a wasteful number, since it uses less digits than its factorization.

61056215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58462.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 61056215 is about 7813.8476437668. The cubic root of 61056215 is about 393.7706047838.

The spelling of 61056215 in words is "sixty-one million, fifty-six thousand, two hundred fifteen".