40155533 has 4 divisors (see below), whose sum is σ = 43806048. Its totient is φ = 36505020.

The previous prime is 40155529. The next prime is 40155551. The reversal of 40155533 is 33555104.

40155533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 40155533 - 2² = 40155529 is a prime.

It is a super-2 number, since 2×40155533² = 3224933661028178, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825241 + ... + 1825262.

It is an arithmetic number, because the mean of its divisors is an integer number (10951512).

Almost surely, 2^40155533 is an apocalyptic number.

It is an amenable number.

40155533 is a deficient number, since it is larger than the sum of its proper divisors (3650515).

40155533 is a wasteful number, since it uses less digits than its factorization.

40155533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650514.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 40155533 is about 6336.8393541260. The cubic root of 40155533 is about 342.4378788714.

The spelling of 40155533 in words is "forty million, one hundred fifty-five thousand, five hundred thirty-three".