45227491 has 4 divisors (see below), whose sum is σ = 45261000. Its totient is φ = 45193984.

The previous prime is 45227477. The next prime is 45227503. The reversal of 45227491 is 19472254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19472254 = 2 ⋅9736127.

It is a cyclic number.

It is not a de Polignac number, because 45227491 - 2⁷ = 45227363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45227401) 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, 14641 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (11315250).

Almost surely, 2^45227491 is an apocalyptic number.

45227491 is a deficient number, since it is larger than the sum of its proper divisors (33509).

45227491 is a wasteful number, since it uses less digits than its factorization.

45227491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33508.

The product of its digits is 20160, while the sum is 34.

The square root of 45227491 is about 6725.1387346285. The cubic root of 45227491 is about 356.2877019296.

The spelling of 45227491 in words is "forty-five million, two hundred twenty-seven thousand, four hundred ninety-one".