45489121 has 4 divisors (see below), whose sum is σ = 46956544. Its totient is φ = 44021700.

The previous prime is 45489107. The next prime is 45489149. The reversal of 45489121 is 12198454.

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: 12198454 = 2 ⋅6099227.

It is a cyclic number.

It is not a de Polignac number, because 45489121 - 2⁹ = 45488609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45480121) 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, 733665 + ... + 733726.

It is an arithmetic number, because the mean of its divisors is an integer number (11739136).

Almost surely, 2^45489121 is an apocalyptic number.

It is an amenable number.

45489121 is a deficient number, since it is larger than the sum of its proper divisors (1467423).

45489121 is a wasteful number, since it uses less digits than its factorization.

45489121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467422.

The product of its digits is 11520, while the sum is 34.

The square root of 45489121 is about 6744.5623282760. The cubic root of 45489121 is about 356.9733939115.

The spelling of 45489121 in words is "forty-five million, four hundred eighty-nine thousand, one hundred twenty-one".