551560641 has 4 divisors (see below), whose sum is σ = 735414192. Its totient is φ = 367707092.

The previous prime is 551560621. The next prime is 551560643. The reversal of 551560641 is 146065155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551560641 - 2²³ = 543172033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551560643) 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, 91926771 + ... + 91926776.

It is an arithmetic number, because the mean of its divisors is an integer number (183853548).

Almost surely, 2^551560641 is an apocalyptic number.

It is an amenable number.

551560641 is a deficient number, since it is larger than the sum of its proper divisors (183853551).

551560641 is a wasteful number, since it uses less digits than its factorization.

551560641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183853550.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 551560641 is about 23485.3282072020. The cubic root of 551560641 is about 820.0954880869.

The spelling of 551560641 in words is "five hundred fifty-one million, five hundred sixty thousand, six hundred forty-one".