45525621 has 16 divisors (see below), whose sum is σ = 64330560. Its totient is φ = 28586880.

The previous prime is 45525527. The next prime is 45525659. The reversal of 45525621 is 12652554.

It is not a de Polignac number, because 45525621 - 2¹⁰ = 45524597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45525421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815 + ... + 9948.

It is an arithmetic number, because the mean of its divisors is an integer number (4020660).

Almost surely, 2^45525621 is an apocalyptic number.

45525621 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45525621 is a deficient number, since it is larger than the sum of its proper divisors (18804939).

45525621 is a wasteful number, since it uses less digits than its factorization.

45525621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836.

The product of its digits is 12000, while the sum is 30.

The square root of 45525621 is about 6747.2676692125. The cubic root of 45525621 is about 357.0688456387.

The spelling of 45525621 in words is "forty-five million, five hundred twenty-five thousand, six hundred twenty-one".