51379291 has 2 divisors, whose sum is σ = 51379292. Its totient is φ = 51379290.

The previous prime is 51379277. The next prime is 51379297. The reversal of 51379291 is 19297315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51379291 - 2⁵ = 51379259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51379291.

It is not a weakly prime, because it can be changed into another prime (51379297) 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 as a sum of consecutive naturals, namely, 25689645 + 25689646.

It is an arithmetic number, because the mean of its divisors is an integer number (25689646).

Almost surely, 2^51379291 is an apocalyptic number.

51379291 is a deficient number, since it is larger than the sum of its proper divisors (1).

51379291 is an equidigital number, since it uses as much as digits as its factorization.

51379291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 51379291 is about 7167.9349187894. The cubic root of 51379291 is about 371.7600366899.

The spelling of 51379291 in words is "fifty-one million, three hundred seventy-nine thousand, two hundred ninety-one".