51874965 has 16 divisors (see below), whose sum is σ = 92222400. Its totient is φ = 27666576.

The previous prime is 51874957. The next prime is 51874967. The reversal of 51874965 is 56947815.

51874965 is a `hidden beast` number, since 518 + 74 + 9 + 65 = 666.

51874965 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 51874965 - 2³ = 51874957 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51874965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51874967) 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 15 ways as a sum of consecutive naturals, for example, 191995 + ... + 192264.

It is an arithmetic number, because the mean of its divisors is an integer number (5763900).

Almost surely, 2^51874965 is an apocalyptic number.

It is an amenable number.

51874965 is a deficient number, since it is larger than the sum of its proper divisors (40347435).

51874965 is a wasteful number, since it uses less digits than its factorization.

51874965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384273 (or 384267 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 51874965 is about 7202.4277157081. The cubic root of 51874965 is about 372.9517124179.

The spelling of 51874965 in words is "fifty-one million, eight hundred seventy-four thousand, nine hundred sixty-five".