40037533 has 8 divisors (see below), whose sum is σ = 43088760. Its totient is φ = 37063680.

The previous prime is 40037513. The next prime is 40037597. The reversal of 40037533 is 33573004.

It can be written as a sum of positive squares in 4 ways, for example, as 636804 + 39400729 = 798^2 + 6277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40037533 - 2⁹ = 40037021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40037498 and 40037507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40037513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18268 + ... + 20341.

It is an arithmetic number, because the mean of its divisors is an integer number (5386095).

Almost surely, 2^40037533 is an apocalyptic number.

It is an amenable number.

40037533 is a deficient number, since it is larger than the sum of its proper divisors (3051227).

40037533 is a wasteful number, since it uses less digits than its factorization.

40037533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38687.

The product of its (nonzero) digits is 3780, while the sum is 25.

The square root of 40037533 is about 6327.5218687888. The cubic root of 40037533 is about 342.1021234413.

The spelling of 40037533 in words is "forty million, thirty-seven thousand, five hundred thirty-three".