51040915 has 8 divisors (see below), whose sum is σ = 61881120. Its totient is φ = 40411392.

The previous prime is 51040889. The next prime is 51040931. The reversal of 51040915 is 51904015.

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

It is a cyclic number.

It is not a de Polignac number, because 51040915 - 2²³ = 42652307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51040915.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52135 + ... + 53104.

It is an arithmetic number, because the mean of its divisors is an integer number (7735140).

Almost surely, 2^51040915 is an apocalyptic number.

51040915 is a deficient number, since it is larger than the sum of its proper divisors (10840205).

51040915 is a wasteful number, since it uses less digits than its factorization.

51040915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105341.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 51040915 is about 7144.2924772156. The cubic root of 51040915 is about 370.9421206172.

The spelling of 51040915 in words is "fifty-one million, forty thousand, nine hundred fifteen".