71552260 has 24 divisors (see below), whose sum is σ = 161818776. Its totient is φ = 26419200.

The previous prime is 71552237. The next prime is 71552263. The reversal of 71552260 is 6225517.

It can be written as a sum of positive squares in 4 ways, for example, as 14760964 + 56791296 = 3842^2 + 7536^2 .

It is a super-2 number, since 2×71552260² = 10239451822215200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71552263) 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, 137341 + ... + 137860.

It is an arithmetic number, because the mean of its divisors is an integer number (6742449).

Almost surely, 2^71552260 is an apocalyptic number.

It is an amenable number.

71552260 is an abundant number, since it is smaller than the sum of its proper divisors (90266516).

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

71552260 is a wasteful number, since it uses less digits than its factorization.

71552260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275223 (or 275221 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 71552260 is about 8458.8568967680. The cubic root of 71552260 is about 415.1526220468.

Adding to 71552260 its reverse (6225517), we get a palindrome (77777777).

It can be divided in two parts, 715 and 52260, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 71552260 in words is "seventy-one million, five hundred fifty-two thousand, two hundred sixty".