40854155 has 4 divisors (see below), whose sum is σ = 49024992. Its totient is φ = 32683320.

The previous prime is 40854131. The next prime is 40854217. The reversal of 40854155 is 55145804.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40854155 - 2⁶ = 40854091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4085411 + ... + 4085420.

It is an arithmetic number, because the mean of its divisors is an integer number (12256248).

Almost surely, 2^40854155 is an apocalyptic number.

40854155 is a deficient number, since it is larger than the sum of its proper divisors (8170837).

40854155 is an equidigital number, since it uses as much as digits as its factorization.

40854155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170836.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 40854155 is about 6391.7255103767. The cubic root of 40854155 is about 344.4123722209.

Adding to 40854155 its reverse (55145804), we get a palindrome (95999959).

The spelling of 40854155 in words is "forty million, eight hundred fifty-four thousand, one hundred fifty-five".