81094527 has 80 divisors (see below), whose sum is σ = 139392000. Its totient is φ = 46702656.

The previous prime is 81094523. The next prime is 81094537. The reversal of 81094527 is 72549018.

It is not a de Polignac number, because 81094527 - 2² = 81094523 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 81094491 and 81094500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81094523) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1026474 + ... + 1026552.

It is an arithmetic number, because the mean of its divisors is an integer number (1742400).

Almost surely, 2^81094527 is an apocalyptic number.

81094527 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

81094527 is the 4503-rd decagonal number.

81094527 is a deficient number, since it is larger than the sum of its proper divisors (58297473).

81094527 is a wasteful number, since it uses less digits than its factorization.

81094527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 81094527 is about 9005.2499687682. The cubic root of 81094527 is about 432.8431161867.

The spelling of 81094527 in words is "eighty-one million, ninety-four thousand, five hundred twenty-seven".