51560515 has 8 divisors (see below), whose sum is σ = 61913808. Its totient is φ = 41220960.

The previous prime is 51560497. The next prime is 51560519. The reversal of 51560515 is 51506515.

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

It is not a de Polignac number, because 51560515 - 2⁷ = 51560387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51560519) 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, 8784 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (7739226).

Almost surely, 2^51560515 is an apocalyptic number.

51560515 is a deficient number, since it is larger than the sum of its proper divisors (10353293).

51560515 is a wasteful number, since it uses less digits than its factorization.

51560515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 51560515 is about 7180.5650891834. The cubic root of 51560515 is about 372.1966119686.

It can be divided in two parts, 515605 and 15, that added together give a triangular number (515620 = T₁₀₁₅).

The spelling of 51560515 in words is "fifty-one million, five hundred sixty thousand, five hundred fifteen".