45089561 has 12 divisors (see below), whose sum is σ = 49846272. Its totient is φ = 40755000.

The previous prime is 45089543. The next prime is 45089579. The reversal of 45089561 is 16598054.

It is an interprime number because it is at equal distance from previous prime (45089543) and next prime (45089579).

It is not a de Polignac number, because 45089561 - 2¹⁴ = 45073177 is a prime.

It is a super-2 number, since 2×45089561² = 4066137022345442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45089581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22136 + ... + 24086.

It is an arithmetic number, because the mean of its divisors is an integer number (4153856).

Almost surely, 2^45089561 is an apocalyptic number.

It is an amenable number.

45089561 is a deficient number, since it is larger than the sum of its proper divisors (4756711).

45089561 is a wasteful number, since it uses less digits than its factorization.

45089561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 45089561 is about 6714.8760971443. The cubic root of 45089561 is about 355.9251436475.

The spelling of 45089561 in words is "forty-five million, eighty-nine thousand, five hundred sixty-one".