45423391 has 4 divisors (see below), whose sum is σ = 48917512. Its totient is φ = 41929272.

The previous prime is 45423379. The next prime is 45423407. The reversal of 45423391 is 19332454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19332454 = 2 ⋅9666227.

It is a cyclic number.

It is not a de Polignac number, because 45423391 - 2⁵ = 45423359 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 (45423311) 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, 1747041 + ... + 1747066.

It is an arithmetic number, because the mean of its divisors is an integer number (12229378).

Almost surely, 2^45423391 is an apocalyptic number.

45423391 is a deficient number, since it is larger than the sum of its proper divisors (3494121).

45423391 is a wasteful number, since it uses less digits than its factorization.

45423391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494120.

The product of its digits is 12960, while the sum is 31.

The square root of 45423391 is about 6739.6877524111. The cubic root of 45423391 is about 356.8013735016.

The spelling of 45423391 in words is "forty-five million, four hundred twenty-three thousand, three hundred ninety-one".