51852978 has 24 divisors (see below), whose sum is σ = 112776300. Its totient is φ = 17218464.

The previous prime is 51852967. The next prime is 51852979. The reversal of 51852978 is 87925815.

It is a happy number.

51852978 is a `hidden beast` number, since 51 + 8 + 529 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51796809 + 56169 = 7197^2 + 237^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51852979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513 + ... + 10196.

Almost surely, 2^51852978 is an apocalyptic number.

51852978 is an abundant number, since it is smaller than the sum of its proper divisors (60923322).

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

51852978 is a wasteful number, since it uses less digits than its factorization.

51852978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10986 (or 10983 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 51852978 is about 7200.9011936007. The cubic root of 51852978 is about 372.8990135993.

The spelling of 51852978 in words is "fifty-one million, eight hundred fifty-two thousand, nine hundred seventy-eight".