51891514 has 16 divisors (see below), whose sum is σ = 82579176. Its totient is φ = 24371200.

The previous prime is 51891493. The next prime is 51891529. The reversal of 51891514 is 41519815.

It can be written as a sum of positive squares in 4 ways, for example, as 44422225 + 7469289 = 6665^2 + 2733^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 51891514.

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, 20604 + ... + 22984.

Almost surely, 2^51891514 is an apocalyptic number.

51891514 is a deficient number, since it is larger than the sum of its proper divisors (30687662).

51891514 is a wasteful number, since it uses less digits than its factorization.

51891514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041.

The product of its digits is 7200, while the sum is 34.

The square root of 51891514 is about 7203.5764728363. The cubic root of 51891514 is about 372.9913675237.

The spelling of 51891514 in words is "fifty-one million, eight hundred ninety-one thousand, five hundred fourteen".