71525889 has 16 divisors (see below), whose sum is σ = 107308800. Its totient is φ = 47078928.

The previous prime is 71525887. The next prime is 71525941. The reversal of 71525889 is 98852517.

It is a happy number.

It is not a de Polignac number, because 71525889 - 2¹ = 71525887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71525887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14634 + ... + 18899.

It is an arithmetic number, because the mean of its divisors is an integer number (6706800).

Almost surely, 2^71525889 is an apocalyptic number.

71525889 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

71525889 is a deficient number, since it is larger than the sum of its proper divisors (35782911).

71525889 is a wasteful number, since it uses less digits than its factorization.

71525889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33621 (or 33615 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 71525889 is about 8457.2979727570. The cubic root of 71525889 is about 415.1016134784.

It can be divided in two parts, 7152 and 5889, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 71525889 in words is "seventy-one million, five hundred twenty-five thousand, eight hundred eighty-nine".