51888815 has 16 divisors (see below), whose sum is σ = 68286240. Its totient is φ = 37537920.

The previous prime is 51888797. The next prime is 51888841.

51888815 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51888815 - 2⁶ = 51888751 is a prime.

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, 8441 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (4267890).

Almost surely, 2^51888815 is an apocalyptic number.

51888815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51888815 is a deficient number, since it is larger than the sum of its proper divisors (16397425).

51888815 is a wasteful number, since it uses less digits than its factorization.

51888815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002.

The product of its digits is 102400, while the sum is 44.

The square root of 51888815 is about 7203.3891329013. The cubic root of 51888815 is about 372.9849006914.

The spelling of 51888815 in words is "fifty-one million, eight hundred eighty-eight thousand, eight hundred fifteen".