40087155 has 8 divisors (see below), whose sum is σ = 64139472. Its totient is φ = 21379808.

The previous prime is 40087129. The next prime is 40087219. The reversal of 40087155 is 55178004.

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 40087155 - 2¹¹ = 40085107 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, 1336224 + ... + 1336253.

It is an arithmetic number, because the mean of its divisors is an integer number (8017434).

Almost surely, 2^40087155 is an apocalyptic number.

40087155 is a deficient number, since it is larger than the sum of its proper divisors (24052317).

40087155 is a wasteful number, since it uses less digits than its factorization.

40087155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672485.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 40087155 is about 6331.4417789316. The cubic root of 40087155 is about 342.2433974071.

The spelling of 40087155 in words is "forty million, eighty-seven thousand, one hundred fifty-five".