45709121 has 4 divisors (see below), whose sum is σ = 45789744. Its totient is φ = 45628500.

The previous prime is 45709099. The next prime is 45709127. The reversal of 45709121 is 12190754.

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.

It is a cyclic number.

It is not a de Polignac number, because 45709121 - 2⁶ = 45709057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45709127) 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, 39455 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (11447436).

Almost surely, 2^45709121 is an apocalyptic number.

It is an amenable number.

45709121 is a deficient number, since it is larger than the sum of its proper divisors (80623).

45709121 is an equidigital number, since it uses as much as digits as its factorization.

45709121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80622.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 45709121 is about 6760.8520912678. The cubic root of 45709121 is about 357.5479479921.

Adding to 45709121 its reverse (12190754), we get a palindrome (57899875).

The spelling of 45709121 in words is "forty-five million, seven hundred nine thousand, one hundred twenty-one".