45663561 has 8 divisors (see below), whose sum is σ = 67649760. Its totient is φ = 30442356.

The previous prime is 45663559. The next prime is 45663571. The reversal of 45663561 is 16536654.

45663561 is a `hidden beast` number, since 4 + 566 + 35 + 61 = 666.

It is not a de Polignac number, because 45663561 - 2¹ = 45663559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45663511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 845595 + ... + 845648.

It is an arithmetic number, because the mean of its divisors is an integer number (8456220).

Almost surely, 2^45663561 is an apocalyptic number.

It is an amenable number.

45663561 is a deficient number, since it is larger than the sum of its proper divisors (21986199).

45663561 is a wasteful number, since it uses less digits than its factorization.

45663561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691252 (or 1691246 counting only the distinct ones).

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

The square root of 45663561 is about 6757.4818534718. The cubic root of 45663561 is about 357.4291146725.

The spelling of 45663561 in words is "forty-five million, six hundred sixty-three thousand, five hundred sixty-one".