45037493 has 4 divisors (see below), whose sum is σ = 46590540. Its totient is φ = 43484448.

The previous prime is 45037483. The next prime is 45037507. The reversal of 45037493 is 39473054.

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 12124324 + 32913169 = 3482^2 + 5737^2 .

It is a cyclic number.

It is not a de Polignac number, because 45037493 - 2²² = 40843189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45037453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776480 + ... + 776537.

It is an arithmetic number, because the mean of its divisors is an integer number (11647635).

Almost surely, 2^45037493 is an apocalyptic number.

It is an amenable number.

45037493 is a deficient number, since it is larger than the sum of its proper divisors (1553047).

45037493 is a wasteful number, since it uses less digits than its factorization.

45037493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553046.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 45037493 is about 6710.9979138724. The cubic root of 45037493 is about 355.7880871754.

The spelling of 45037493 in words is "forty-five million, thirty-seven thousand, four hundred ninety-three".