45454621 has 4 divisors (see below), whose sum is σ = 45896032. Its totient is φ = 45013212.

The previous prime is 45454597. The next prime is 45454627. The reversal of 45454621 is 12645454.

It is a happy number.

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: 12645454 = 2 ⋅6322727.

It is a cyclic number.

It is not a de Polignac number, because 45454621 - 2¹⁵ = 45421853 is a prime.

It is a super-2 number, since 2×45454621² = 4132245140507282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45454627) 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, 220551 + ... + 220756.

It is an arithmetic number, because the mean of its divisors is an integer number (11474008).

Almost surely, 2^45454621 is an apocalyptic number.

It is an amenable number.

45454621 is a deficient number, since it is larger than the sum of its proper divisors (441411).

45454621 is a wasteful number, since it uses less digits than its factorization.

45454621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441410.

The product of its digits is 19200, while the sum is 31.

The square root of 45454621 is about 6742.0042272310. The cubic root of 45454621 is about 356.8831254648.

The spelling of 45454621 in words is "forty-five million, four hundred fifty-four thousand, six hundred twenty-one".