45559681 has 4 divisors (see below), whose sum is σ = 46002112. Its totient is φ = 45117252.

The previous prime is 45559627. The next prime is 45559687. The reversal of 45559681 is 18695554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45559681 is a prime.

It is a super-2 number, since 2×45559681² = 4151369065643522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45559687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221061 + ... + 221266.

It is an arithmetic number, because the mean of its divisors is an integer number (11500528).

Almost surely, 2^45559681 is an apocalyptic number.

It is an amenable number.

45559681 is a deficient number, since it is larger than the sum of its proper divisors (442431).

45559681 is a wasteful number, since it uses less digits than its factorization.

45559681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442430.

The product of its digits is 216000, while the sum is 43.

The square root of 45559681 is about 6749.7911819552. The cubic root of 45559681 is about 357.1578704774.

The spelling of 45559681 in words is "forty-five million, five hundred fifty-nine thousand, six hundred eighty-one".