71445152 has 48 divisors (see below), whose sum is σ = 151443432. Its totient is φ = 33054720.

The previous prime is 71445139. The next prime is 71445161. The reversal of 71445152 is 25154417.

It can be written as a sum of positive squares in 4 ways, for example, as 34527376 + 36917776 = 5876^2 + 6076^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32108 + ... + 34260.

Almost surely, 2^71445152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71445152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75721716).

71445152 is an abundant number, since it is smaller than the sum of its proper divisors (79998280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71445152 is a wasteful number, since it uses less digits than its factorization.

71445152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2233 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 71445152 is about 8452.5234102012. The cubic root of 71445152 is about 414.9453685283.

Adding to 71445152 its reverse (25154417), we get a palindrome (96599569).

The spelling of 71445152 in words is "seventy-one million, four hundred forty-five thousand, one hundred fifty-two".