81167052 has 24 divisors (see below), whose sum is σ = 195500032. Its totient is φ = 26182800.

The previous prime is 81167039. The next prime is 81167057. The reversal of 81167052 is 25076118.

It is not an unprimeable number, because it can be changed into a prime (81167057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108724 + ... + 109467.

Almost surely, 2^81167052 is an apocalyptic number.

It is an amenable number.

81167052 is an abundant number, since it is smaller than the sum of its proper divisors (114332980).

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

81167052 is a wasteful number, since it uses less digits than its factorization.

81167052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218229 (or 218227 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 81167052 is about 9009.2758865516. The cubic root of 81167052 is about 432.9721121235.

The spelling of 81167052 in words is "eighty-one million, one hundred sixty-seven thousand, fifty-two".