45637915 has 4 divisors (see below), whose sum is σ = 54765504. Its totient is φ = 36510328.

The previous prime is 45637913. The next prime is 45637937. The reversal of 45637915 is 51973654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51973654 = 2 ⋅25986827.

It is a cyclic number.

It is not a de Polignac number, because 45637915 - 2¹ = 45637913 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 not an unprimeable number, because it can be changed into a prime (45637913) 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, 4563787 + ... + 4563796.

It is an arithmetic number, because the mean of its divisors is an integer number (13691376).

Almost surely, 2^45637915 is an apocalyptic number.

45637915 is a deficient number, since it is larger than the sum of its proper divisors (9127589).

45637915 is an equidigital number, since it uses as much as digits as its factorization.

45637915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9127588.

The product of its digits is 113400, while the sum is 40.

The square root of 45637915 is about 6755.5839865995. The cubic root of 45637915 is about 357.3621879042.

The spelling of 45637915 in words is "forty-five million, six hundred thirty-seven thousand, nine hundred fifteen".