51956291 has 8 divisors (see below), whose sum is σ = 53455680. Its totient is φ = 50473408.

The previous prime is 51956263. The next prime is 51956293. The reversal of 51956291 is 19265915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51956291 - 2⁶ = 51956227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51956293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2405 + ... + 10473.

It is an arithmetic number, because the mean of its divisors is an integer number (6681960).

Almost surely, 2^51956291 is an apocalyptic number.

51956291 is a deficient number, since it is larger than the sum of its proper divisors (1499389).

51956291 is a wasteful number, since it uses less digits than its factorization.

51956291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253.

The product of its digits is 24300, while the sum is 38.

The square root of 51956291 is about 7208.0712399365. The cubic root of 51956291 is about 373.1465066675.

The spelling of 51956291 in words is "fifty-one million, nine hundred fifty-six thousand, two hundred ninety-one".