71252500 has 60 divisors (see below), whose sum is σ = 170045568. Its totient is φ = 25900000.

The previous prime is 71252497. The next prime is 71252501. The reversal of 71252500 is 525217.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71252501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26205 + ... + 28795.

Almost surely, 2^71252500 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 71252500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85022784).

71252500 is an abundant number, since it is smaller than the sum of its proper divisors (98793068).

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

71252500 is a wasteful number, since it uses less digits than its factorization.

71252500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 71252500 is about 8441.1195939875. The cubic root of 71252500 is about 414.5720657752.

Adding to 71252500 its reverse (525217), we get a palindrome (71777717).

The spelling of 71252500 in words is "seventy-one million, two hundred fifty-two thousand, five hundred".