40045529 has 4 divisors (see below), whose sum is σ = 40077840. Its totient is φ = 40013220.

The previous prime is 40045517. The next prime is 40045547. The reversal of 40045529 is 92554004.

It is a happy number.

40045529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 40045529 - 2²⁰ = 38996953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40045589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14219 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (10019460).

Almost surely, 2^40045529 is an apocalyptic number.

It is an amenable number.

40045529 is a deficient number, since it is larger than the sum of its proper divisors (32311).

40045529 is a wasteful number, since it uses less digits than its factorization.

40045529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32310.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40045529 is about 6328.1536801819. The cubic root of 40045529 is about 342.1248959608.

The spelling of 40045529 in words is "forty million, forty-five thousand, five hundred twenty-nine".