51625851 has 8 divisors (see below), whose sum is σ = 69330240. Its totient is φ = 34169352.

The previous prime is 51625817. The next prime is 51625859. The reversal of 51625851 is 15852615.

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

It is not a de Polignac number, because 51625851 - 2⁷ = 51625723 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51625859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61485 + ... + 62318.

It is an arithmetic number, because the mean of its divisors is an integer number (8666280).

Almost surely, 2^51625851 is an apocalyptic number.

51625851 is a deficient number, since it is larger than the sum of its proper divisors (17704389).

51625851 is a wasteful number, since it uses less digits than its factorization.

51625851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123945.

The product of its digits is 12000, while the sum is 33.

The square root of 51625851 is about 7185.1131515099. The cubic root of 51625851 is about 372.3537578870.

The spelling of 51625851 in words is "fifty-one million, six hundred twenty-five thousand, eight hundred fifty-one".