45280621 has 4 divisors (see below), whose sum is σ = 45442044. Its totient is φ = 45119200.

The previous prime is 45280607. The next prime is 45280657. The reversal of 45280621 is 12608254.

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 16924996 + 28355625 = 4114^2 + 5325^2 .

It is a cyclic number.

It is not a de Polignac number, because 45280621 - 2¹³ = 45272429 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 45280621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45280601) 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, 80290 + ... + 80851.

It is an arithmetic number, because the mean of its divisors is an integer number (11360511).

Almost surely, 2^45280621 is an apocalyptic number.

It is an amenable number.

45280621 is a deficient number, since it is larger than the sum of its proper divisors (161423).

45280621 is a wasteful number, since it uses less digits than its factorization.

45280621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161422.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 45280621 is about 6729.0876796190. The cubic root of 45280621 is about 356.4271610481.

Adding to 45280621 its reverse (12608254), we get a palindrome (57888875).

The spelling of 45280621 in words is "forty-five million, two hundred eighty thousand, six hundred twenty-one".