45072591 has 8 divisors (see below), whose sum is σ = 60130224. Its totient is φ = 30031680.

The previous prime is 45072553. The next prime is 45072607. The reversal of 45072591 is 19527054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45072591 - 2¹⁰ = 45071567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45072191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4981 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (7516278).

Almost surely, 2^45072591 is an apocalyptic number.

45072591 is a deficient number, since it is larger than the sum of its proper divisors (15057633).

45072591 is a wasteful number, since it uses less digits than its factorization.

45072591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 45072591 is about 6713.6123659324. The cubic root of 45072591 is about 355.8804858046.

The spelling of 45072591 in words is "forty-five million, seventy-two thousand, five hundred ninety-one".