40056155 has 8 divisors (see below), whose sum is σ = 48103200. Its totient is φ = 32021056.

The previous prime is 40056073. The next prime is 40056167. The reversal of 40056155 is 55165004.

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 40056155 - 2¹⁸ = 39794011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8231 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (6012900).

Almost surely, 2^40056155 is an apocalyptic number.

40056155 is a deficient number, since it is larger than the sum of its proper divisors (8047045).

40056155 is a wasteful number, since it uses less digits than its factorization.

40056155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 40056155 is about 6328.9932058741. The cubic root of 40056155 is about 342.1551540007.

The spelling of 40056155 in words is "forty million, fifty-six thousand, one hundred fifty-five".