51655602 has 16 divisors (see below), whose sum is σ = 105261120. Its totient is φ = 16893552.

The previous prime is 51655573. The next prime is 51655609. The reversal of 51655602 is 20655615.

It is a self number, because there is not a number n which added to its sum of digits gives 51655602.

It is not an unprimeable number, because it can be changed into a prime (51655609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80902 + ... + 81537.

It is an arithmetic number, because the mean of its divisors is an integer number (6578820).

Almost surely, 2^51655602 is an apocalyptic number.

51655602 is an abundant number, since it is smaller than the sum of its proper divisors (53605518).

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

51655602 is a wasteful number, since it uses less digits than its factorization.

51655602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162497.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 51655602 is about 7187.1831756259. The cubic root of 51655602 is about 372.4252709573.

The spelling of 51655602 in words is "fifty-one million, six hundred fifty-five thousand, six hundred two".