40517955 has 32 divisors (see below), whose sum is σ = 73267200. Its totient is φ = 21239136.

The previous prime is 40517951. The next prime is 40518007. The reversal of 40517955 is 55971504.

It is not a de Polignac number, because 40517955 - 2² = 40517951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40517951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5422 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (2289600).

Almost surely, 2^40517955 is an apocalyptic number.

40517955 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40517955 is a deficient number, since it is larger than the sum of its proper divisors (32749245).

40517955 is a wasteful number, since it uses less digits than its factorization.

40517955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 40517955 is about 6365.3715523919. The cubic root of 40517955 is about 343.4650142664.

The spelling of 40517955 in words is "forty million, five hundred seventeen thousand, nine hundred fifty-five".