45422509 has 4 divisors (see below), whose sum is σ = 49551840. Its totient is φ = 41293180.

The previous prime is 45422459. The next prime is 45422513. The reversal of 45422509 is 90522454.

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 45422509 - 2¹⁷ = 45291437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45422519) 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, 2064649 + ... + 2064670.

It is an arithmetic number, because the mean of its divisors is an integer number (12387960).

Almost surely, 2^45422509 is an apocalyptic number.

It is an amenable number.

45422509 is a deficient number, since it is larger than the sum of its proper divisors (4129331).

45422509 is a wasteful number, since it uses less digits than its factorization.

45422509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129330.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 45422509 is about 6739.6223187950. The cubic root of 45422509 is about 356.7990641125.

The spelling of 45422509 in words is "forty-five million, four hundred twenty-two thousand, five hundred nine".