45737993 has 16 divisors (see below), whose sum is σ = 53778816. Its totient is φ = 38088960.

The previous prime is 45737971. The next prime is 45737999. The reversal of 45737993 is 39973754.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-45737993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45737999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41378 + ... + 42468.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^45737993 is an apocalyptic number.

It is an amenable number.

45737993 is a deficient number, since it is larger than the sum of its proper divisors (8040823).

45737993 is a wasteful number, since it uses less digits than its factorization.

45737993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its digits is 714420, while the sum is 47.

The square root of 45737993 is about 6762.9869880105. The cubic root of 45737993 is about 357.6232134342.

The spelling of 45737993 in words is "forty-five million, seven hundred thirty-seven thousand, nine hundred ninety-three".