81046156 has 12 divisors (see below), whose sum is σ = 141974560. Its totient is φ = 40482000.

The previous prime is 81046151. The next prime is 81046177. The reversal of 81046156 is 65164018.

It is a super-3 number, since 3×81046156³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (81046151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595 + ... + 13906.

Almost surely, 2^81046156 is an apocalyptic number.

It is an amenable number.

81046156 is a deficient number, since it is larger than the sum of its proper divisors (60928404).

81046156 is a wasteful number, since it uses less digits than its factorization.

81046156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20544 (or 20542 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 81046156 is about 9002.5638570354. The cubic root of 81046156 is about 432.7570387848.

The spelling of 81046156 in words is "eighty-one million, forty-six thousand, one hundred fifty-six".