45237391 has 12 divisors (see below), whose sum is σ = 49126176. Its totient is φ = 41511680.

The previous prime is 45237373. The next prime is 45237431. The reversal of 45237391 is 19373254.

It is not a de Polignac number, because 45237391 - 2¹³ = 45229199 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 (45237301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27786 + ... + 29368.

It is an arithmetic number, because the mean of its divisors is an integer number (4093848).

Almost surely, 2^45237391 is an apocalyptic number.

45237391 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45237391 is a deficient number, since it is larger than the sum of its proper divisors (3888785).

45237391 is a wasteful number, since it uses less digits than its factorization.

45237391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1641 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 45237391 is about 6725.8747386492. The cubic root of 45237391 is about 356.3136963771.

The spelling of 45237391 in words is "forty-five million, two hundred thirty-seven thousand, three hundred ninety-one".