45490023 has 12 divisors (see below), whose sum is σ = 66608880. Its totient is φ = 29910816.

The previous prime is 45490019. The next prime is 45490043. The reversal of 45490023 is 32009454.

It is not a de Polignac number, because 45490023 - 2² = 45490019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45490013) 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, 33963 + ... + 35276.

It is an arithmetic number, because the mean of its divisors is an integer number (5550740).

Almost surely, 2^45490023 is an apocalyptic number.

45490023 is a deficient number, since it is larger than the sum of its proper divisors (21118857).

45490023 is a wasteful number, since it uses less digits than its factorization.

45490023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69318 (or 69315 counting only the distinct ones).

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

The square root of 45490023 is about 6744.6291966275. The cubic root of 45490023 is about 356.9757533611.

Adding to 45490023 its reverse (32009454), we get a palindrome (77499477).

The spelling of 45490023 in words is "forty-five million, four hundred ninety thousand, twenty-three".