45637621 has 8 divisors (see below), whose sum is σ = 46519200. Its totient is φ = 44759760.

The previous prime is 45637609. The next prime is 45637637. The reversal of 45637621 is 12673654.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45637621 - 2¹³ = 45629429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45637651) 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 7 ways as a sum of consecutive naturals, for example, 41286 + ... + 42376.

It is an arithmetic number, because the mean of its divisors is an integer number (5814900).

Almost surely, 2^45637621 is an apocalyptic number.

It is an amenable number.

45637621 is a deficient number, since it is larger than the sum of its proper divisors (881579).

45637621 is a wasteful number, since it uses less digits than its factorization.

45637621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859.

The product of its digits is 30240, while the sum is 34.

The square root of 45637621 is about 6755.5622267876. The cubic root of 45637621 is about 357.3614205254.

The spelling of 45637621 in words is "forty-five million, six hundred thirty-seven thousand, six hundred twenty-one".