45037723 has 4 divisors (see below), whose sum is σ = 45111808. Its totient is φ = 44963640.

The previous prime is 45037711. The next prime is 45037747. The reversal of 45037723 is 32773054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32773054 = 2 ⋅16386527.

It is a cyclic number.

It is not a de Polignac number, because 45037723 - 2¹³ = 45029531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45037763) 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, 36123 + ... + 37348.

It is an arithmetic number, because the mean of its divisors is an integer number (11277952).

Almost surely, 2^45037723 is an apocalyptic number.

45037723 is a deficient number, since it is larger than the sum of its proper divisors (74085).

45037723 is an equidigital number, since it uses as much as digits as its factorization.

45037723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74084.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 45037723 is about 6711.0150499012. The cubic root of 45037723 is about 355.7886928273.

The spelling of 45037723 in words is "forty-five million, thirty-seven thousand, seven hundred twenty-three".