45637247 has 4 divisors (see below), whose sum is σ = 45705336. Its totient is φ = 45569160.

The previous prime is 45637219. The next prime is 45637253. The reversal of 45637247 is 74273654.

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

It is a cyclic number.

It is not a de Polignac number, because 45637247 - 2¹⁶ = 45571711 is a prime.

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 45637247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45637547) 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, 33029 + ... + 34382.

It is an arithmetic number, because the mean of its divisors is an integer number (11426334).

Almost surely, 2^45637247 is an apocalyptic number.

45637247 is a deficient number, since it is larger than the sum of its proper divisors (68089).

45637247 is an equidigital number, since it uses as much as digits as its factorization.

45637247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68088.

The product of its digits is 141120, while the sum is 38.

The square root of 45637247 is about 6755.5345458372. The cubic root of 45637247 is about 357.3604443313.

The spelling of 45637247 in words is "forty-five million, six hundred thirty-seven thousand, two hundred forty-seven".