45242321 has 16 divisors (see below), whose sum is σ = 49896000. Its totient is φ = 40846848.

The previous prime is 45242317. The next prime is 45242333. The reversal of 45242321 is 12324254.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45242321 - 2² = 45242317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45242381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42605 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (3118500).

Almost surely, 2^45242321 is an apocalyptic number.

It is an amenable number.

45242321 is a deficient number, since it is larger than the sum of its proper divisors (4653679).

45242321 is a wasteful number, since it uses less digits than its factorization.

45242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

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

The square root of 45242321 is about 6726.2412237445. The cubic root of 45242321 is about 356.3266396723.

Adding to 45242321 its reverse (12324254), we get a palindrome (57566575).

The spelling of 45242321 in words is "forty-five million, two hundred forty-two thousand, three hundred twenty-one".