45423445 has 4 divisors (see below), whose sum is σ = 54508140. Its totient is φ = 36338752.

The previous prime is 45423431. The next prime is 45423527. The reversal of 45423445 is 54432454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15382084 + 30041361 = 3922^2 + 5481^2 .

It is a cyclic number.

It is not a de Polignac number, because 45423445 - 2⁷ = 45423317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4542340 + ... + 4542349.

It is an arithmetic number, because the mean of its divisors is an integer number (13627035).

Almost surely, 2^45423445 is an apocalyptic number.

It is an amenable number.

45423445 is a deficient number, since it is larger than the sum of its proper divisors (9084695).

45423445 is an equidigital number, since it uses as much as digits as its factorization.

45423445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084694.

The product of its digits is 38400, while the sum is 31.

The square root of 45423445 is about 6739.6917585302. The cubic root of 45423445 is about 356.8015148918.

Adding to 45423445 its reverse (54432454), we get a palindrome (99855899).

Subtracting 45423445 from its reverse (54432454), we obtain a palindrome (9009009).

The spelling of 45423445 in words is "forty-five million, four hundred twenty-three thousand, four hundred forty-five".