51766413 has 4 divisors (see below), whose sum is σ = 69021888. Its totient is φ = 34510940.

The previous prime is 51766381. The next prime is 51766457. The reversal of 51766413 is 31466715.

51766413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51766413 - 2⁵ = 51766381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51762413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8627733 + ... + 8627738.

It is an arithmetic number, because the mean of its divisors is an integer number (17255472).

Almost surely, 2^51766413 is an apocalyptic number.

It is an amenable number.

51766413 is a deficient number, since it is larger than the sum of its proper divisors (17255475).

51766413 is a wasteful number, since it uses less digits than its factorization.

51766413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17255474.

The product of its digits is 15120, while the sum is 33.

The square root of 51766413 is about 7194.8879768903. The cubic root of 51766413 is about 372.6913882187.

The spelling of 51766413 in words is "fifty-one million, seven hundred sixty-six thousand, four hundred thirteen".