566540251 has 4 divisors (see below), whose sum is σ = 566660032. Its totient is φ = 566420472.

The previous prime is 566540239. The next prime is 566540257. The reversal of 566540251 is 152045665.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566540251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566540257) by changing a digit.

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, 52491 + ... + 62356.

It is an arithmetic number, because the mean of its divisors is an integer number (141665008).

Almost surely, 2^566540251 is an apocalyptic number.

566540251 is a deficient number, since it is larger than the sum of its proper divisors (119781).

566540251 is a wasteful number, since it uses less digits than its factorization.

566540251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119780.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 566540251 is about 23802.1060202664. The cubic root of 566540251 is about 827.4534864921.

The spelling of 566540251 in words is "five hundred sixty-six million, five hundred forty thousand, two hundred fifty-one".