51356479 has 2 divisors, whose sum is σ = 51356480. Its totient is φ = 51356478.

The previous prime is 51356453. The next prime is 51356489. The reversal of 51356479 is 97465315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51356479 - 2⁷ = 51356351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51356489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25678239 + 25678240.

It is an arithmetic number, because the mean of its divisors is an integer number (25678240).

Almost surely, 2^51356479 is an apocalyptic number.

51356479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51356479 is an equidigital number, since it uses as much as digits as its factorization.

51356479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 51356479 is about 7166.3434888372. The cubic root of 51356479 is about 371.7050090370.

The spelling of 51356479 in words is "fifty-one million, three hundred fifty-six thousand, four hundred seventy-nine".