71045144 has 8 divisors (see below), whose sum is σ = 133209660. Its totient is φ = 35522568.

The previous prime is 71045141. The next prime is 71045147. The reversal of 71045144 is 44154017.

It is an interprime number because it is at equal distance from previous prime (71045141) and next prime (71045147).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71045141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4440314 + ... + 4440329.

Almost surely, 2^71045144 is an apocalyptic number.

It is an amenable number.

71045144 is a deficient number, since it is larger than the sum of its proper divisors (62164516).

71045144 is a wasteful number, since it uses less digits than its factorization.

71045144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880649 (or 8880645 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 71045144 is about 8428.8281510540. The cubic root of 71045144 is about 414.1695183560.

It can be divided in two parts, 710 and 45144, that added together give a palindrome (45854).

The spelling of 71045144 in words is "seventy-one million, forty-five thousand, one hundred forty-four".