51208375 has 16 divisors (see below), whose sum is σ = 64640160. Its totient is φ = 40497600.

The previous prime is 51208357. The next prime is 51208393. The reversal of 51208375 is 57380215.

51208375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51208357) and next prime (51208393).

It is not a de Polignac number, because 51208375 - 2⁵ = 51208343 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8824 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (4040010).

Almost surely, 2^51208375 is an apocalyptic number.

51208375 is a deficient number, since it is larger than the sum of its proper divisors (13431785).

51208375 is an equidigital number, since it uses as much as digits as its factorization.

51208375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707 (or 4697 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 51208375 is about 7156.0027249855. The cubic root of 51208375 is about 371.3473520990.

The spelling of 51208375 in words is "fifty-one million, two hundred eight thousand, three hundred seventy-five".