45301621 has 4 divisors (see below), whose sum is σ = 45939744. Its totient is φ = 44663500.

The previous prime is 45301603. The next prime is 45301657. The reversal of 45301621 is 12610354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12610354 = 2 ⋅6305177.

It is a cyclic number.

It is not a de Polignac number, because 45301621 - 2¹⁷ = 45170549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45301592 and 45301601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45301601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318955 + ... + 319096.

It is an arithmetic number, because the mean of its divisors is an integer number (11484936).

Almost surely, 2^45301621 is an apocalyptic number.

It is an amenable number.

45301621 is a deficient number, since it is larger than the sum of its proper divisors (638123).

45301621 is an equidigital number, since it uses as much as digits as its factorization.

45301621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638122.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 45301621 is about 6730.6478885766. The cubic root of 45301621 is about 356.4822531486.

Adding to 45301621 its reverse (12610354), we get a palindrome (57911975).

The spelling of 45301621 in words is "forty-five million, three hundred one thousand, six hundred twenty-one".