45172537 has 4 divisors (see below), whose sum is σ = 45188836. Its totient is φ = 45156240.

The previous prime is 45172531. The next prime is 45172559. The reversal of 45172537 is 73527154.

45172537 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: 73527154 = 2 ⋅36763577.

It can be written as a sum of positive squares in 2 ways, for example, as 22553001 + 22619536 = 4749^2 + 4756^2 .

It is a cyclic number.

It is not a de Polignac number, because 45172537 - 2¹⁹ = 44648249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45172531) 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, 2838 + ... + 9919.

It is an arithmetic number, because the mean of its divisors is an integer number (11297209).

Almost surely, 2^45172537 is an apocalyptic number.

It is an amenable number.

45172537 is a deficient number, since it is larger than the sum of its proper divisors (16299).

45172537 is a wasteful number, since it uses less digits than its factorization.

45172537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298.

The product of its digits is 29400, while the sum is 34.

The square root of 45172537 is about 6721.0517778098. The cubic root of 45172537 is about 356.1433401020.

The spelling of 45172537 in words is "forty-five million, one hundred seventy-two thousand, five hundred thirty-seven".