551990754 has 128 divisors (see below), whose sum is σ = 1475297280. Its totient is φ = 149573952.

The previous prime is 551990737. The next prime is 551990767. The reversal of 551990754 is 457099155.

551990754 is a `hidden beast` number, since 551 + 9 + 90 + 7 + 5 + 4 = 666.

551990754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1503879 + ... + 1504245.

It is an arithmetic number, because the mean of its divisors is an integer number (11525760).

Almost surely, 2^551990754 is an apocalyptic number.

551990754 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 551990754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737648640).

551990754 is an abundant number, since it is smaller than the sum of its proper divisors (923306526).

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

551990754 is a wasteful number, since it uses less digits than its factorization.

551990754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The square root of 551990754 is about 23494.4834801704. The cubic root of 551990754 is about 820.3086058329.

The spelling of 551990754 in words is "five hundred fifty-one million, nine hundred ninety thousand, seven hundred fifty-four".