40155455 has 8 divisors (see below), whose sum is σ = 50722800. Its totient is φ = 30433536.

The previous prime is 40155449. The next prime is 40155457. The reversal of 40155455 is 55455104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40155455 - 2⁴ = 40155439 is a prime.

It is a super-2 number, since 2×40155455² = 3224921132514050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211250 + ... + 211439.

It is an arithmetic number, because the mean of its divisors is an integer number (6340350).

Almost surely, 2^40155455 is an apocalyptic number.

40155455 is a deficient number, since it is larger than the sum of its proper divisors (10567345).

40155455 is a wasteful number, since it uses less digits than its factorization.

40155455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422713.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 40155455 is about 6336.8331996353. The cubic root of 40155455 is about 342.4376571488.

The spelling of 40155455 in words is "forty million, one hundred fifty-five thousand, four hundred fifty-five".