51550308 has 36 divisors (see below), whose sum is σ = 130537680. Its totient is φ = 17153136.

The previous prime is 51550297. The next prime is 51550309. The reversal of 51550308 is 80305515.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (51550309) 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, 30091 + ... + 31757.

Almost surely, 2^51550308 is an apocalyptic number.

It is an amenable number.

51550308 is an abundant number, since it is smaller than the sum of its proper divisors (78987372).

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

51550308 is a wasteful number, since it uses less digits than its factorization.

51550308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51550308 is about 7179.8543160708. The cubic root of 51550308 is about 372.1720501405.

The spelling of 51550308 in words is "fifty-one million, five hundred fifty thousand, three hundred eight".