51187323 has 16 divisors (see below), whose sum is σ = 78834816. Its totient is φ = 29197440.

The previous prime is 51187319. The next prime is 51187327. The reversal of 51187323 is 32378115.

It is an interprime number because it is at equal distance from previous prime (51187319) and next prime (51187327).

It is not a de Polignac number, because 51187323 - 2² = 51187319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51187327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45061 + ... + 46182.

It is an arithmetic number, because the mean of its divisors is an integer number (4927176).

Almost surely, 2^51187323 is an apocalyptic number.

51187323 is a deficient number, since it is larger than the sum of its proper divisors (27647493).

51187323 is a wasteful number, since it uses less digits than its factorization.

51187323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91274.

The product of its digits is 5040, while the sum is 30.

The square root of 51187323 is about 7154.5316408553. The cubic root of 51187323 is about 371.2964575856.

The spelling of 51187323 in words is "fifty-one million, one hundred eighty-seven thousand, three hundred twenty-three".