551511355 has 4 divisors (see below), whose sum is σ = 661813632. Its totient is φ = 441209080.

The previous prime is 551511329. The next prime is 551511379. The reversal of 551511355 is 553115155.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 551511355 - 2¹¹ = 551509307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55151131 + ... + 55151140.

It is an arithmetic number, because the mean of its divisors is an integer number (165453408).

Almost surely, 2^551511355 is an apocalyptic number.

551511355 is a deficient number, since it is larger than the sum of its proper divisors (110302277).

551511355 is a wasteful number, since it uses less digits than its factorization.

551511355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110302276.

The product of its digits is 9375, while the sum is 31.

The square root of 551511355 is about 23484.2788903556. The cubic root of 551511355 is about 820.0710601714.

The spelling of 551511355 in words is "five hundred fifty-one million, five hundred eleven thousand, three hundred fifty-five".