40445523 has 12 divisors (see below), whose sum is σ = 60961680. Its totient is φ = 25791216.

The previous prime is 40445491. The next prime is 40445527. The reversal of 40445523 is 32554404.

It is not a de Polignac number, because 40445523 - 2⁵ = 40445491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40445527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97488 + ... + 97901.

It is an arithmetic number, because the mean of its divisors is an integer number (5080140).

Almost surely, 2^40445523 is an apocalyptic number.

40445523 is a deficient number, since it is larger than the sum of its proper divisors (20516157).

40445523 is a wasteful number, since it uses less digits than its factorization.

40445523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195418 (or 195415 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 40445523 is about 6359.6794730552. The cubic root of 40445523 is about 343.2602268911.

Adding to 40445523 its reverse (32554404), we get a palindrome (72999927).

The spelling of 40445523 in words is "forty million, four hundred forty-five thousand, five hundred twenty-three".