45090243 has 32 divisors (see below), whose sum is σ = 73413120. Its totient is φ = 27125280.

The previous prime is 45090233. The next prime is 45090247. The reversal of 45090243 is 34209054.

It is not a de Polignac number, because 45090243 - 2⁶ = 45090179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (45090247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46146 + ... + 47112.

It is an arithmetic number, because the mean of its divisors is an integer number (2294160).

Almost surely, 2^45090243 is an apocalyptic number.

45090243 is a deficient number, since it is larger than the sum of its proper divisors (28322877).

45090243 is a wasteful number, since it uses less digits than its factorization.

45090243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 45090243 is about 6714.9268797210. The cubic root of 45090243 is about 355.9269381480.

Adding to 45090243 its reverse (34209054), we get a palindrome (79299297).

The spelling of 45090243 in words is "forty-five million, ninety thousand, two hundred forty-three".