71455155 has 24 divisors (see below), whose sum is σ = 118159056. Its totient is φ = 36872640.

The previous prime is 71455151. The next prime is 71455187. The reversal of 71455155 is 55155417.

It is a happy number.

It is not a de Polignac number, because 71455155 - 2² = 71455151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71455151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11937 + ... + 16893.

It is an arithmetic number, because the mean of its divisors is an integer number (4923294).

Almost surely, 2^71455155 is an apocalyptic number.

71455155 is a deficient number, since it is larger than the sum of its proper divisors (46703901).

71455155 is a wasteful number, since it uses less digits than its factorization.

71455155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027 (or 4996 counting only the distinct ones).

The product of its digits is 17500, while the sum is 33.

The square root of 71455155 is about 8453.1151062789. The cubic root of 71455155 is about 414.9647330557.

The spelling of 71455155 in words is "seventy-one million, four hundred fifty-five thousand, one hundred fifty-five".