45541621 has 4 divisors (see below), whose sum is σ = 45643500. Its totient is φ = 45439744.

The previous prime is 45541619. The next prime is 45541627. The reversal of 45541621 is 12614554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32364721 + 13176900 = 5689^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 45541621 - 2¹ = 45541619 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 45541621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45541627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50266 + ... + 51163.

It is an arithmetic number, because the mean of its divisors is an integer number (11410875).

Almost surely, 2^45541621 is an apocalyptic number.

It is an amenable number.

45541621 is a deficient number, since it is larger than the sum of its proper divisors (101879).

45541621 is a wasteful number, since it uses less digits than its factorization.

45541621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101878.

The product of its digits is 4800, while the sum is 28.

The square root of 45541621 is about 6748.4532301854. The cubic root of 45541621 is about 357.1106714081.

The spelling of 45541621 in words is "forty-five million, five hundred forty-one thousand, six hundred twenty-one".