51863379 has 8 divisors (see below), whose sum is σ = 73218960. Its totient is φ = 32541696.

The previous prime is 51863363. The next prime is 51863389. The reversal of 51863379 is 97336815.

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

It is not a de Polignac number, because 51863379 - 2⁴ = 51863363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51863379.

It is not an unprimeable number, because it can be changed into a prime (51863389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508414 + ... + 508515.

It is an arithmetic number, because the mean of its divisors is an integer number (9152370).

Almost surely, 2^51863379 is an apocalyptic number.

51863379 is a deficient number, since it is larger than the sum of its proper divisors (21355581).

51863379 is a wasteful number, since it uses less digits than its factorization.

51863379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016949.

The product of its digits is 136080, while the sum is 42.

The square root of 51863379 is about 7201.6233586602. The cubic root of 51863379 is about 372.9239447508.

The spelling of 51863379 in words is "fifty-one million, eight hundred sixty-three thousand, three hundred seventy-nine".