45427281 has 16 divisors (see below), whose sum is σ = 64310400. Its totient is φ = 28424448.

The previous prime is 45427279. The next prime is 45427289. The reversal of 45427281 is 18272454.

It is not a de Polignac number, because 45427281 - 2¹ = 45427279 is a prime.

It is a super-2 number, since 2×45427281² = 4127275718105922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45427289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21375 + ... + 23403.

It is an arithmetic number, because the mean of its divisors is an integer number (4019400).

Almost surely, 2^45427281 is an apocalyptic number.

It is an amenable number.

45427281 is a deficient number, since it is larger than the sum of its proper divisors (18883119).

45427281 is a wasteful number, since it uses less digits than its factorization.

45427281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488.

The product of its digits is 17920, while the sum is 33.

The square root of 45427281 is about 6739.9763352700. The cubic root of 45427281 is about 356.8115585457.

The spelling of 45427281 in words is "forty-five million, four hundred twenty-seven thousand, two hundred eighty-one".