71755146 has 40 divisors (see below), whose sum is σ = 161559684. Its totient is φ = 23803200.

The previous prime is 71755133. The next prime is 71755183. The reversal of 71755146 is 64155717.

71755146 is a `hidden beast` number, since 71 + 75 + 514 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60606225 + 11148921 = 7785^2 + 3339^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71755146.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36796 + ... + 38696.

Almost surely, 2^71755146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71755146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80779842).

71755146 is an abundant number, since it is smaller than the sum of its proper divisors (89804538).

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

71755146 is a wasteful number, since it uses less digits than its factorization.

71755146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2139 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 71755146 is about 8470.8409263780. The cubic root of 71755146 is about 415.5446393411.

It can be divided in two parts, 7175 and 5146, that added together give a palindrome (12321).

The spelling of 71755146 in words is "seventy-one million, seven hundred fifty-five thousand, one hundred forty-six".