45242213 has 4 divisors (see below), whose sum is σ = 45334848. Its totient is φ = 45149580.

The previous prime is 45242209. The next prime is 45242227. The reversal of 45242213 is 31224254.

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.

It is a cyclic number.

It is not a de Polignac number, because 45242213 - 2² = 45242209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45242293) 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, 45581 + ... + 46562.

It is an arithmetic number, because the mean of its divisors is an integer number (11333712).

Almost surely, 2^45242213 is an apocalyptic number.

It is an amenable number.

45242213 is a deficient number, since it is larger than the sum of its proper divisors (92635).

45242213 is an equidigital number, since it uses as much as digits as its factorization.

45242213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92634.

The product of its digits is 1920, while the sum is 23.

The square root of 45242213 is about 6726.2331954817. The cubic root of 45242213 is about 356.3263561375.

Adding to 45242213 its reverse (31224254), we get a palindrome (76466467).

The spelling of 45242213 in words is "forty-five million, two hundred forty-two thousand, two hundred thirteen".