81054694 has 16 divisors (see below), whose sum is σ = 139104288. Its totient is φ = 34699392.

The previous prime is 81054683. The next prime is 81054697. The reversal of 81054694 is 49645018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81054697) 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, 12654 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (8694018).

Almost surely, 2^81054694 is an apocalyptic number.

81054694 is a deficient number, since it is larger than the sum of its proper divisors (58049594).

81054694 is a wasteful number, since it uses less digits than its factorization.

81054694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 81054694 is about 9003.0380427942. The cubic root of 81054694 is about 432.7722348576.

The spelling of 81054694 in words is "eighty-one million, fifty-four thousand, six hundred ninety-four".