71501080 has 32 divisors (see below), whose sum is σ = 183860640. Its totient is φ = 24514560.

The previous prime is 71501071. The next prime is 71501113. The reversal of 71501080 is 8010517.

It is a super-2 number, since 2×71501080² = 10224808882332800, which contains 22 as substring.

It is a congruent number.

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, 127401 + ... + 127960.

It is an arithmetic number, because the mean of its divisors is an integer number (5745645).

Almost surely, 2^71501080 is an apocalyptic number.

71501080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71501080 is an abundant number, since it is smaller than the sum of its proper divisors (112359560).

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

71501080 is a wasteful number, since it uses less digits than its factorization.

71501080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255379 (or 255375 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 71501080 is about 8455.8311241415. The cubic root of 71501080 is about 415.0536147889.

Adding to 71501080 its reverse (8010517), we get a palindrome (79511597).

The spelling of 71501080 in words is "seventy-one million, five hundred one thousand, eighty".