51379279 has 4 divisors (see below), whose sum is σ = 58719184. Its totient is φ = 44039376.

The previous prime is 51379277. The next prime is 51379291. The reversal of 51379279 is 97297315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51379279 - 2¹ = 51379277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51379277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3669942 + ... + 3669955.

It is an arithmetic number, because the mean of its divisors is an integer number (14679796).

Almost surely, 2^51379279 is an apocalyptic number.

51379279 is a deficient number, since it is larger than the sum of its proper divisors (7339905).

51379279 is an equidigital number, since it uses as much as digits as its factorization.

51379279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7339904.

The product of its digits is 119070, while the sum is 43.

The square root of 51379279 is about 7167.9340817282. The cubic root of 51379279 is about 371.7600077475.

The spelling of 51379279 in words is "fifty-one million, three hundred seventy-nine thousand, two hundred seventy-nine".