51946677 has 10 divisors (see below), whose sum is σ = 77599478. Its totient is φ = 34631064.

The previous prime is 51946667. The next prime is 51946693. The reversal of 51946677 is 77664915.

It is a happy number.

51946677 is a `hidden beast` number, since 519 + 4 + 66 + 77 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51710481 + 236196 = 7191^2 + 486^2 .

It is not a de Polignac number, because 51946677 - 2⁶ = 51946613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51946637) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 320578 + ... + 320739.

Almost surely, 2^51946677 is an apocalyptic number.

It is an amenable number.

51946677 is a deficient number, since it is larger than the sum of its proper divisors (25652801).

51946677 is an equidigital number, since it uses as much as digits as its factorization.

51946677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641329 (or 641320 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 51946677 is about 7207.4043177832. The cubic root of 51946677 is about 373.1234895522.

The spelling of 51946677 in words is "fifty-one million, nine hundred forty-six thousand, six hundred seventy-seven".