40537505 has 16 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 31163328.

The previous prime is 40537501. The next prime is 40537529. The reversal of 40537505 is 50573504.

It is a cyclic number.

It is not a de Polignac number, because 40537505 - 2² = 40537501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40537501) 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, 37604 + ... + 38666.

It is an arithmetic number, because the mean of its divisors is an integer number (3160080).

Almost surely, 2^40537505 is an apocalyptic number.

It is an amenable number.

40537505 is a deficient number, since it is larger than the sum of its proper divisors (10023775).

40537505 is a wasteful number, since it uses less digits than its factorization.

40537505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 40537505 is about 6366.9070198959. The cubic root of 40537505 is about 343.5202462523.

The spelling of 40537505 in words is "forty million, five hundred thirty-seven thousand, five hundred five".