51802878 has 32 divisors (see below), whose sum is σ = 105684480. Its totient is φ = 16924320.

The previous prime is 51802871. The next prime is 51802879. The reversal of 51802878 is 87820815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51802871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117783 + ... + 118221.

It is an arithmetic number, because the mean of its divisors is an integer number (3302640).

Almost surely, 2^51802878 is an apocalyptic number.

51802878 is an abundant number, since it is smaller than the sum of its proper divisors (53881602).

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

51802878 is a wasteful number, since it uses less digits than its factorization.

51802878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 51802878 is about 7197.4216216642. The cubic root of 51802878 is about 372.7788773897.

The spelling of 51802878 in words is "fifty-one million, eight hundred two thousand, eight hundred seventy-eight".