45423751 has 4 divisors (see below), whose sum is σ = 45455904. Its totient is φ = 45391600.

The previous prime is 45423743. The next prime is 45423767. The reversal of 45423751 is 15732454.

45423751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15732454 = 2 ⋅7866227.

It is a cyclic number.

It is not a de Polignac number, because 45423751 - 2³ = 45423743 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45423701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13855 + ... + 16816.

It is an arithmetic number, because the mean of its divisors is an integer number (11363976).

Almost surely, 2^45423751 is an apocalyptic number.

45423751 is a deficient number, since it is larger than the sum of its proper divisors (32153).

45423751 is a wasteful number, since it uses less digits than its factorization.

45423751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32152.

The product of its digits is 16800, while the sum is 31.

The square root of 45423751 is about 6739.7144598269. The cubic root of 45423751 is about 356.8023161008.

The spelling of 45423751 in words is "forty-five million, four hundred twenty-three thousand, seven hundred fifty-one".