40135545 has 24 divisors (see below), whose sum is σ = 71814912. Its totient is φ = 20714400.

The previous prime is 40135523. The next prime is 40135547. The reversal of 40135545 is 54553104.

It is not a de Polignac number, because 40135545 - 2⁹ = 40135033 is a prime.

It is a super-2 number, since 2×40135545² = 3221723944894050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40135547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12991 + ... + 15780.

It is an arithmetic number, because the mean of its divisors is an integer number (2992288).

Almost surely, 2^40135545 is an apocalyptic number.

40135545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40135545 is a deficient number, since it is larger than the sum of its proper divisors (31679367).

40135545 is a wasteful number, since it uses less digits than its factorization.

40135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28813 (or 28810 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 40135545 is about 6335.2620308871. The cubic root of 40135545 is about 342.3810516316.

Adding to 40135545 its reverse (54553104), we get a palindrome (94688649).

The spelling of 40135545 in words is "forty million, one hundred thirty-five thousand, five hundred forty-five".