45422149 has 4 divisors (see below), whose sum is σ = 46988460. Its totient is φ = 43855840.

The previous prime is 45422101. The next prime is 45422173. The reversal of 45422149 is 94122454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94122454 = 2 ⋅47061227.

It can be written as a sum of positive squares in 2 ways, for example, as 19228225 + 26193924 = 4385^2 + 5118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45422149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45422149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45422549) 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, 783112 + ... + 783169.

It is an arithmetic number, because the mean of its divisors is an integer number (11747115).

Almost surely, 2^45422149 is an apocalyptic number.

It is an amenable number.

45422149 is a deficient number, since it is larger than the sum of its proper divisors (1566311).

45422149 is a wasteful number, since it uses less digits than its factorization.

45422149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566310.

The product of its digits is 11520, while the sum is 31.

The square root of 45422149 is about 6739.5956110141. The cubic root of 45422149 is about 356.7981214962.

The spelling of 45422149 in words is "forty-five million, four hundred twenty-two thousand, one hundred forty-nine".