51234979 has 2 divisors, whose sum is σ = 51234980. Its totient is φ = 51234978.

The previous prime is 51234929. The next prime is 51235003. The reversal of 51234979 is 97943215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51234979 is a prime.

It is not a weakly prime, because it can be changed into another prime (51234929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617489 + 25617490.

It is an arithmetic number, because the mean of its divisors is an integer number (25617490).

Almost surely, 2^51234979 is an apocalyptic number.

51234979 is a deficient number, since it is larger than the sum of its proper divisors (1).

51234979 is an equidigital number, since it uses as much as digits as its factorization.

51234979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 51234979 is about 7157.8613426079. The cubic root of 51234979 is about 371.4116489684.

The spelling of 51234979 in words is "fifty-one million, two hundred thirty-four thousand, nine hundred seventy-nine".