71445552 has 40 divisors (see below), whose sum is σ = 185028336. Its totient is φ = 23755776.

The previous prime is 71445547. The next prime is 71445553. The reversal of 71445552 is 25554417.

It is not an unprimeable number, because it can be changed into a prime (71445553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20308 + ... + 23564.

Almost surely, 2^71445552 is an apocalyptic number.

It is an amenable number.

71445552 is an abundant number, since it is smaller than the sum of its proper divisors (113582784).

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

71445552 is a wasteful number, since it uses less digits than its factorization.

71445552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725 (or 3719 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 71445552 is about 8452.5470717412. The cubic root of 71445552 is about 414.9461429117.

Adding to 71445552 its reverse (25554417), we get a palindrome (96999969).

The spelling of 71445552 in words is "seventy-one million, four hundred forty-five thousand, five hundred fifty-two".