51292279 has 2 divisors, whose sum is σ = 51292280. Its totient is φ = 51292278.

The previous prime is 51292273. The next prime is 51292289. The reversal of 51292279 is 97229215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51292279 - 2¹⁷ = 51161207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51292273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25646139 + 25646140.

It is an arithmetic number, because the mean of its divisors is an integer number (25646140).

Almost surely, 2^51292279 is an apocalyptic number.

51292279 is a deficient number, since it is larger than the sum of its proper divisors (1).

51292279 is an equidigital number, since it uses as much as digits as its factorization.

51292279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 51292279 is about 7161.8628163349. The cubic root of 51292279 is about 371.5500567457.

The spelling of 51292279 in words is "fifty-one million, two hundred ninety-two thousand, two hundred seventy-nine".