40523 has 6 divisors (see below), whose sum is σ = 47196. Its totient is φ = 34692.

The previous prime is 40519. The next prime is 40529. The reversal of 40523 is 32504.

It is not a de Polignac number, because 40523 - 2² = 40519 is a prime.

It is a super-2 number, since 2×40523² = 3284227058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40498 and 40507.

It is not an unprimeable number, because it can be changed into a prime (40529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365 + ... + 462.

It is an arithmetic number, because the mean of its divisors is an integer number (7866).

2⁴⁰⁵²³ is an apocalyptic number.

40523 is a deficient number, since it is larger than the sum of its proper divisors (6673).

40523 is an equidigital number, since it uses as much as digits as its factorization.

40523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 40523 is about 201.3032538237. The cubic root of 40523 is about 34.3479268927.

The spelling of 40523 in words is "forty thousand, five hundred twenty-three".