551697655 has 4 divisors (see below), whose sum is σ = 662037192. Its totient is φ = 441358120.

The previous prime is 551697649. The next prime is 551697659. The reversal of 551697655 is 556796155.

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

It is not a de Polignac number, because 551697655 - 2³ = 551697647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551697599 and 551697608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551697659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55169761 + ... + 55169770.

It is an arithmetic number, because the mean of its divisors is an integer number (165509298).

Almost surely, 2^551697655 is an apocalyptic number.

551697655 is a deficient number, since it is larger than the sum of its proper divisors (110339537).

551697655 is a wasteful number, since it uses less digits than its factorization.

551697655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110339536.

The product of its digits is 1417500, while the sum is 49.

The square root of 551697655 is about 23488.2450387423. The cubic root of 551697655 is about 820.1633895118.

The spelling of 551697655 in words is "five hundred fifty-one million, six hundred ninety-seven thousand, six hundred fifty-five".