45185449 has 4 divisors (see below), whose sum is σ = 45729936. Its totient is φ = 44640964.

The previous prime is 45185429. The next prime is 45185453. The reversal of 45185449 is 94458154.

45185449 = T₁₅₂ + T₁₅₃ + ... + T₆₄₉.

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 a de Polignac number, because none of the positive numbers 2^k-45185449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45185419) 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, 272119 + ... + 272284.

It is an arithmetic number, because the mean of its divisors is an integer number (11432484).

Almost surely, 2^45185449 is an apocalyptic number.

45185449 is the 5489-th centered triangular number.

It is an amenable number.

45185449 is a deficient number, since it is larger than the sum of its proper divisors (544487).

45185449 is an equidigital number, since it uses as much as digits as its factorization.

45185449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544486.

The product of its digits is 115200, while the sum is 40.

The square root of 45185449 is about 6722.0122731218. The cubic root of 45185449 is about 356.1772698968.

The spelling of 45185449 in words is "forty-five million, one hundred eighty-five thousand, four hundred forty-nine".