45302561 has 4 divisors (see below), whose sum is σ = 45330324. Its totient is φ = 45274800.

The previous prime is 45302557. The next prime is 45302599. The reversal of 45302561 is 16520354.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 24690961 = 4540^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 45302561 - 2² = 45302557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45302561.

It is not an unprimeable number, because it can be changed into a prime (45302531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11270 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (11332581).

Almost surely, 2^45302561 is an apocalyptic number.

It is an amenable number.

45302561 is a deficient number, since it is larger than the sum of its proper divisors (27763).

45302561 is a wasteful number, since it uses less digits than its factorization.

45302561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27762.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 45302561 is about 6730.7177180446. The cubic root of 45302561 is about 356.4847187778.

The spelling of 45302561 in words is "forty-five million, three hundred two thousand, five hundred sixty-one".