45531641 has 4 divisors (see below), whose sum is σ = 45581172. Its totient is φ = 45482112.

The previous prime is 45531637. The next prime is 45531649. The reversal of 45531641 is 14613554.

It is a happy number.

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 12996025 + 32535616 = 3605^2 + 5704^2 .

It is a cyclic number.

It is not a de Polignac number, because 45531641 - 2² = 45531637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45531649) 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, 23360 + ... + 25233.

It is an arithmetic number, because the mean of its divisors is an integer number (11395293).

Almost surely, 2^45531641 is an apocalyptic number.

It is an amenable number.

45531641 is a deficient number, since it is larger than the sum of its proper divisors (49531).

45531641 is an equidigital number, since it uses as much as digits as its factorization.

45531641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49530.

The product of its digits is 7200, while the sum is 29.

The square root of 45531641 is about 6747.7137609712. The cubic root of 45531641 is about 357.0845837342.

The spelling of 45531641 in words is "forty-five million, five hundred thirty-one thousand, six hundred forty-one".