51978060 has 36 divisors (see below), whose sum is σ = 157667328. Its totient is φ = 13860768.

The previous prime is 51977983. The next prime is 51978127. The reversal of 51978060 is 6087915.

51978060 is a `hidden beast` number, since 519 + 7 + 80 + 60 = 666.

51978060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 144204 + ... + 144563.

It is an arithmetic number, because the mean of its divisors is an integer number (4379648).

Almost surely, 2^51978060 is an apocalyptic number.

It is an amenable number.

51978060 is an abundant number, since it is smaller than the sum of its proper divisors (105689268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51978060 is a wasteful number, since it uses less digits than its factorization.

51978060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288782 (or 288777 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 51978060 is about 7209.5811251417. The cubic root of 51978060 is about 373.1986138774.

The spelling of 51978060 in words is "fifty-one million, nine hundred seventy-eight thousand, sixty".