81009754 has 8 divisors (see below), whose sum is σ = 138873888. Its totient is φ = 34718460.

The previous prime is 81009751. The next prime is 81009757. The reversal of 81009754 is 45790018.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81009751) and next prime (81009757).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×81009754³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (81009751) 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, 2893192 + ... + 2893219.

It is an arithmetic number, because the mean of its divisors is an integer number (17359236).

Almost surely, 2^81009754 is an apocalyptic number.

81009754 is a deficient number, since it is larger than the sum of its proper divisors (57864134).

81009754 is a wasteful number, since it uses less digits than its factorization.

81009754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786420.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 81009754 is about 9000.5418725763. The cubic root of 81009754 is about 432.6922379289.

The spelling of 81009754 in words is "eighty-one million, nine thousand, seven hundred fifty-four".