45274729 has 4 divisors (see below), whose sum is σ = 45342676. Its totient is φ = 45206784.

The previous prime is 45274727. The next prime is 45274751. The reversal of 45274729 is 92747254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9753129 + 35521600 = 3123^2 + 5960^2 .

It is a cyclic number.

It is not a de Polignac number, because 45274729 - 2¹ = 45274727 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45274691 and 45274700.

It is not an unprimeable number, because it can be changed into a prime (45274727) 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, 32964 + ... + 34309.

It is an arithmetic number, because the mean of its divisors is an integer number (11335669).

Almost surely, 2^45274729 is an apocalyptic number.

It is an amenable number.

45274729 is a deficient number, since it is larger than the sum of its proper divisors (67947).

45274729 is an equidigital number, since it uses as much as digits as its factorization.

45274729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67946.

The product of its digits is 141120, while the sum is 40.

The square root of 45274729 is about 6728.6498645716. The cubic root of 45274729 is about 356.4117007188.

The spelling of 45274729 in words is "forty-five million, two hundred seventy-four thousand, seven hundred twenty-nine".