45817591 has 4 divisors (see below), whose sum is σ = 45837352. Its totient is φ = 45797832.

The previous prime is 45817589. The next prime is 45817609. The reversal of 45817591 is 19571854.

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 45817591 - 2¹ = 45817589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45817511) 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, 5856 + ... + 11221.

It is an arithmetic number, because the mean of its divisors is an integer number (11459338).

Almost surely, 2^45817591 is an apocalyptic number.

45817591 is a deficient number, since it is larger than the sum of its proper divisors (19761).

45817591 is a wasteful number, since it uses less digits than its factorization.

45817591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19760.

The product of its digits is 50400, while the sum is 40.

The square root of 45817591 is about 6768.8692556438. The cubic root of 45817591 is about 357.8305508752.

The spelling of 45817591 in words is "forty-five million, eight hundred seventeen thousand, five hundred ninety-one".