71755452 has 72 divisors (see below), whose sum is σ = 189221760. Its totient is φ = 22901760.

The previous prime is 71755441. The next prime is 71755493. The reversal of 71755452 is 25455717.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125824 + ... + 126392.

It is an arithmetic number, because the mean of its divisors is an integer number (2628080).

Almost surely, 2^71755452 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 71755452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94610880).

71755452 is an abundant number, since it is smaller than the sum of its proper divisors (117466308).

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

71755452 is a wasteful number, since it uses less digits than its factorization.

71755452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 718 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 71755452 is about 8470.8589883199. The cubic root of 71755452 is about 415.5452300374.

It can be divided in two parts, 717 and 55452, that added together give a square (56169 = 237²).

The spelling of 71755452 in words is "seventy-one million, seven hundred fifty-five thousand, four hundred fifty-two".