51912977 has 2 divisors, whose sum is σ = 51912978. Its totient is φ = 51912976.

The previous prime is 51912967. The next prime is 51912989. The reversal of 51912977 is 77921915.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43612816 + 8300161 = 6604^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 51912977 - 2¹⁰ = 51911953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51912967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25956488 + 25956489.

It is an arithmetic number, because the mean of its divisors is an integer number (25956489).

Almost surely, 2^51912977 is an apocalyptic number.

It is an amenable number.

51912977 is a deficient number, since it is larger than the sum of its proper divisors (1).

51912977 is an equidigital number, since it uses as much as digits as its factorization.

51912977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 41.

The square root of 51912977 is about 7205.0660649296. The cubic root of 51912977 is about 373.0427851167.

The spelling of 51912977 in words is "fifty-one million, nine hundred twelve thousand, nine hundred seventy-seven".