566121945 has 16 divisors (see below), whose sum is σ = 906426432. Its totient is φ = 301721280.

The previous prime is 566121943. The next prime is 566121971. The reversal of 566121945 is 549121665.

It is not a de Polignac number, because 566121945 - 2¹ = 566121943 is a prime.

It is a super-2 number, since 2×566121945² = 640988113221166050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (566121943) 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 15 ways as a sum of consecutive naturals, for example, 10455 + ... + 35235.

It is an arithmetic number, because the mean of its divisors is an integer number (56651652).

Almost surely, 2^566121945 is an apocalyptic number.

It is an amenable number.

566121945 is a deficient number, since it is larger than the sum of its proper divisors (340304487).

566121945 is a wasteful number, since it uses less digits than its factorization.

566121945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26312.

The product of its digits is 64800, while the sum is 39.

The square root of 566121945 is about 23793.3172340470. The cubic root of 566121945 is about 827.2497857660.

The spelling of 566121945 in words is "five hundred sixty-six million, one hundred twenty-one thousand, nine hundred forty-five".