45505621 has 8 divisors (see below), whose sum is σ = 52272000. Its totient is φ = 38805648.

The previous prime is 45505619. The next prime is 45505631. The reversal of 45505621 is 12650554.

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

It is not a de Polignac number, because 45505621 - 2¹ = 45505619 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 45505621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45505631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15121 + ... + 17878.

It is an arithmetic number, because the mean of its divisors is an integer number (6534000).

Almost surely, 2^45505621 is an apocalyptic number.

It is an amenable number.

45505621 is a deficient number, since it is larger than the sum of its proper divisors (6766379).

45505621 is a wasteful number, since it uses less digits than its factorization.

45505621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33203.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 45505621 is about 6745.7854249894. The cubic root of 45505621 is about 357.0165496438.

The spelling of 45505621 in words is "forty-five million, five hundred five thousand, six hundred twenty-one".