45242813 has 16 divisors (see below), whose sum is σ = 58354560. Its totient is φ = 34036800.

The previous prime is 45242809. The next prime is 45242851. The reversal of 45242813 is 31824254.

It is a happy number.

It is not a de Polignac number, because 45242813 - 2² = 45242809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45242893) 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, 7898 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (3647160).

Almost surely, 2^45242813 is an apocalyptic number.

It is an amenable number.

45242813 is a deficient number, since it is larger than the sum of its proper divisors (13111747).

45242813 is a wasteful number, since it uses less digits than its factorization.

45242813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20308.

The product of its digits is 7680, while the sum is 29.

The square root of 45242813 is about 6726.2777968205. The cubic root of 45242813 is about 356.3279313248.

It can be divided in two parts, 4524 and 2813, that added together give a palindrome (7337).

The spelling of 45242813 in words is "forty-five million, two hundred forty-two thousand, eight hundred thirteen".