51155202 has 32 divisors (see below), whose sum is σ = 118029312. Its totient is φ = 14477904.

The previous prime is 51155189. The next prime is 51155257. The reversal of 51155202 is 20255115.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198 + ... + 10185.

It is an arithmetic number, because the mean of its divisors is an integer number (3688416).

Almost surely, 2^51155202 is an apocalyptic number.

51155202 is an abundant number, since it is smaller than the sum of its proper divisors (66874110).

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

51155202 is a wasteful number, since it uses less digits than its factorization.

51155202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11502.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51155202 is about 7152.2864875507. The cubic root of 51155202 is about 371.2187761834.

The spelling of 51155202 in words is "fifty-one million, one hundred fifty-five thousand, two hundred two".