51653875 has 64 divisors (see below), whose sum is σ = 83865600. Its totient is φ = 30844800.

The previous prime is 51653873. The next prime is 51653897. The reversal of 51653875 is 57835615.

51653875 = 168² + 169² + ... + 542².

51653875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51653875 - 2¹ = 51653873 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51653873) 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 63 ways as a sum of consecutive naturals, for example, 216006 + ... + 216244.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^51653875 is an apocalyptic number.

51653875 is a deficient number, since it is larger than the sum of its proper divisors (32211725).

51653875 is a wasteful number, since it uses less digits than its factorization.

51653875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 283 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 51653875 is about 7187.0630301953. The cubic root of 51653875 is about 372.4211204839.

The spelling of 51653875 in words is "fifty-one million, six hundred fifty-three thousand, eight hundred seventy-five".