45475537 has 4 divisors (see below), whose sum is σ = 46333620. Its totient is φ = 44617456.

The previous prime is 45475523. The next prime is 45475541. The reversal of 45475537 is 73557454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36288576 + 9186961 = 6024^2 + 3031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45475537 is a prime.

It is a Smith number, since the sum of its digits (40) 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 self number, because there is not a number n which added to its sum of digits gives 45475537.

It is not an unprimeable number, because it can be changed into a prime (45475517) 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, 428962 + ... + 429067.

It is an arithmetic number, because the mean of its divisors is an integer number (11583405).

Almost surely, 2^45475537 is an apocalyptic number.

It is an amenable number.

45475537 is a deficient number, since it is larger than the sum of its proper divisors (858083).

45475537 is an equidigital number, since it uses as much as digits as its factorization.

45475537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858082.

The product of its digits is 294000, while the sum is 40.

The square root of 45475537 is about 6743.5552196152. Note that the first 3 decimals coincide. The cubic root of 45475537 is about 356.9378571411.

The spelling of 45475537 in words is "forty-five million, four hundred seventy-five thousand, five hundred thirty-seven".