551755764 has 72 divisors (see below), whose sum is σ = 1597202880. Its totient is φ = 157324032.

The previous prime is 551755759. The next prime is 551755793. The reversal of 551755764 is 467557155.

551755764 is a `hidden beast` number, since 5 + 5 + 1 + 75 + 576 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139932 + ... + 143820.

Almost surely, 2^551755764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551755764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798601440).

551755764 is an abundant number, since it is smaller than the sum of its proper divisors (1045447116).

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

551755764 is a wasteful number, since it uses less digits than its factorization.

551755764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469 (or 4464 counting only the distinct ones).

The product of its digits is 735000, while the sum is 45.

The square root of 551755764 is about 23489.4819866254. The cubic root of 551755764 is about 820.1921837863.

The spelling of 551755764 in words is "five hundred fifty-one million, seven hundred fifty-five thousand, seven hundred sixty-four".