565120551 has 4 divisors (see below), whose sum is σ = 753494072. Its totient is φ = 376747032.

The previous prime is 565120547. The next prime is 565120559. The reversal of 565120551 is 155021565.

565120551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 565120551 - 2² = 565120547 is a prime.

It is a super-2 number, since 2×565120551² = 638722474325087202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565120559) 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, 94186756 + ... + 94186761.

It is an arithmetic number, because the mean of its divisors is an integer number (188373518).

Almost surely, 2^565120551 is an apocalyptic number.

565120551 is a deficient number, since it is larger than the sum of its proper divisors (188373521).

565120551 is a wasteful number, since it uses less digits than its factorization.

565120551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188373520.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 565120551 is about 23772.2643221044. The cubic root of 565120551 is about 826.7617331450.

The spelling of 565120551 in words is "five hundred sixty-five million, one hundred twenty thousand, five hundred fifty-one".