40537 has 4 divisors (see below), whose sum is σ = 46336. Its totient is φ = 34740.

The previous prime is 40531. The next prime is 40543. The reversal of 40537 is 73504.

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 an interprime number because it is at equal distance from previous prime (40531) and next prime (40543).

It is a cyclic number.

It is not a de Polignac number, because 40537 - 2³ = 40529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40531) 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, 2889 + ... + 2902.

It is an arithmetic number, because the mean of its divisors is an integer number (11584).

2⁴⁰⁵³⁷ is an apocalyptic number.

It is an amenable number.

40537 is a deficient number, since it is larger than the sum of its proper divisors (5799).

40537 is an equidigital number, since it uses as much as digits as its factorization.

40537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 40537 is about 201.3380242279. The cubic root of 40537 is about 34.3518819767.

The spelling of 40537 in words is "forty thousand, five hundred thirty-seven".