366522561 has 24 divisors (see below), whose sum is σ = 555208680. Its totient is φ = 232678656.

The previous prime is 366522557. The next prime is 366522581. The reversal of 366522561 is 165225663.

It is a happy number.

366522561 is a `hidden beast` number, since 36 + 65 + 2 + 2 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18326961 + 348195600 = 4281^2 + 18660^2 .

It is not a de Polignac number, because 366522561 - 2² = 366522557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (366522581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9435 + ... + 28671.

It is an arithmetic number, because the mean of its divisors is an integer number (23133695).

Almost surely, 2^366522561 is an apocalyptic number.

It is an amenable number.

366522561 is a deficient number, since it is larger than the sum of its proper divisors (188686119).

366522561 is a wasteful number, since it uses less digits than its factorization.

366522561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19345 (or 19342 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 366522561 is about 19144.7789488414. The cubic root of 366522561 is about 715.6492780256.

The spelling of 366522561 in words is "three hundred sixty-six million, five hundred twenty-two thousand, five hundred sixty-one".