45369621 has 24 divisors (see below), whose sum is σ = 72408960. Its totient is φ = 27144000.

The previous prime is 45369563. The next prime is 45369661. The reversal of 45369621 is 12696354.

It is a happy number.

It is not a de Polignac number, because 45369621 - 2¹³ = 45361429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45369661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4921 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (3017040).

Almost surely, 2^45369621 is an apocalyptic number.

It is an amenable number.

45369621 is a deficient number, since it is larger than the sum of its proper divisors (27039339).

45369621 is a wasteful number, since it uses less digits than its factorization.

45369621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897 (or 5894 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 45369621 is about 6735.6975139921. The cubic root of 45369621 is about 356.6605298776.

The spelling of 45369621 in words is "forty-five million, three hundred sixty-nine thousand, six hundred twenty-one".