51944915 has 8 divisors (see below), whose sum is σ = 68000688. Its totient is φ = 37778080.

The previous prime is 51944897. The next prime is 51944941.

51944915 is nontrivially palindromic in base 10.

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

It is a de Polignac number, because none of the positive numbers 2^k-51944915 is a prime.

It is a Duffinian number.

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, 472172 + ... + 472281.

It is an arithmetic number, because the mean of its divisors is an integer number (8500086).

Almost surely, 2^51944915 is an apocalyptic number.

51944915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51944915 is a deficient number, since it is larger than the sum of its proper divisors (16055773).

51944915 is a wasteful number, since it uses less digits than its factorization.

51944915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944469.

The product of its digits is 32400, while the sum is 38.

The square root of 51944915 is about 7207.2820813397. The cubic root of 51944915 is about 373.1192707965.

The spelling of 51944915 in words is "fifty-one million, nine hundred forty-four thousand, nine hundred fifteen".