551288136 has 64 divisors (see below), whose sum is σ = 1590451200. Its totient is φ = 155976768.

The previous prime is 551288119. The next prime is 551288167. The reversal of 551288136 is 631882155.

It is a junction number, because it is equal to n+sod(n) for n = 551288094 and 551288103.

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, 1375 + ... + 33233.

It is an arithmetic number, because the mean of its divisors is an integer number (24850800).

Almost surely, 2^551288136 is an apocalyptic number.

551288136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551288136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795225600).

551288136 is an abundant number, since it is smaller than the sum of its proper divisors (1039163064).

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

551288136 is a wasteful number, since it uses less digits than its factorization.

551288136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31978 (or 31974 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The square root of 551288136 is about 23479.5258895916. The cubic root of 551288136 is about 819.9604065753.

The spelling of 551288136 in words is "five hundred fifty-one million, two hundred eighty-eight thousand, one hundred thirty-six".