51557802 has 16 divisors (see below), whose sum is σ = 103200960. Its totient is φ = 17171712.

The previous prime is 51557791. The next prime is 51557819. The reversal of 51557802 is 20875515.

It is a happy number.

51557802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 6474 + ... + 12042.

It is an arithmetic number, because the mean of its divisors is an integer number (6450060).

Almost surely, 2^51557802 is an apocalyptic number.

51557802 is an abundant number, since it is smaller than the sum of its proper divisors (51643158).

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

51557802 is a wasteful number, since it uses less digits than its factorization.

51557802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 51557802 is about 7180.3761739898. The cubic root of 51557802 is about 372.1900838006.

The spelling of 51557802 in words is "fifty-one million, five hundred fifty-seven thousand, eight hundred two".