40254155 has 4 divisors (see below), whose sum is σ = 48304992. Its totient is φ = 32203320.

The previous prime is 40254143. The next prime is 40254157. The reversal of 40254155 is 55145204.

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

It is not a de Polignac number, because 40254155 - 2⁶ = 40254091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40254157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025411 + ... + 4025420.

It is an arithmetic number, because the mean of its divisors is an integer number (12076248).

Almost surely, 2^40254155 is an apocalyptic number.

40254155 is a deficient number, since it is larger than the sum of its proper divisors (8050837).

40254155 is an equidigital number, since it uses as much as digits as its factorization.

40254155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050836.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 40254155 is about 6344.6162216481. The cubic root of 40254155 is about 342.7179921849.

Adding to 40254155 its reverse (55145204), we get a palindrome (95399359).

The spelling of 40254155 in words is "forty million, two hundred fifty-four thousand, one hundred fifty-five".