51396279 has 16 divisors (see below), whose sum is σ = 75489024. Its totient is φ = 30844800.

The previous prime is 51396269. The next prime is 51396299. The reversal of 51396279 is 97269315.

It is not a de Polignac number, because 51396279 - 2⁴ = 51396263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51396279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51396229) 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, 4162 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (4718064).

Almost surely, 2^51396279 is an apocalyptic number.

51396279 is a deficient number, since it is larger than the sum of its proper divisors (24092745).

51396279 is a wasteful number, since it uses less digits than its factorization.

51396279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15238.

The product of its digits is 102060, while the sum is 42.

The square root of 51396279 is about 7169.1198204522. The cubic root of 51396279 is about 371.8010049702.

The spelling of 51396279 in words is "fifty-one million, three hundred ninety-six thousand, two hundred seventy-nine".