45541591 has 4 divisors (see below), whose sum is σ = 45793384. Its totient is φ = 45289800.

The previous prime is 45541583. The next prime is 45541619. The reversal of 45541591 is 19514554.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45541591 - 2³ = 45541583 is a prime.

It is a super-2 number, since 2×45541591² = 4148073021622562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45541501) 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, 125625 + ... + 125986.

It is an arithmetic number, because the mean of its divisors is an integer number (11448346).

Almost surely, 2^45541591 is an apocalyptic number.

45541591 is a deficient number, since it is larger than the sum of its proper divisors (251793).

45541591 is a wasteful number, since it uses less digits than its factorization.

45541591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251792.

The product of its digits is 18000, while the sum is 34.

The square root of 45541591 is about 6748.4510074535. The cubic root of 45541591 is about 357.1105929939.

The spelling of 45541591 in words is "forty-five million, five hundred forty-one thousand, five hundred ninety-one".