81046355 has 8 divisors (see below), whose sum is σ = 104736912. Its totient is φ = 59849568.

The previous prime is 81046351. The next prime is 81046363. The reversal of 81046355 is 55364018.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 81046355 - 2² = 81046351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81046351) 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, 623369 + ... + 623498.

It is an arithmetic number, because the mean of its divisors is an integer number (13092114).

Almost surely, 2^81046355 is an apocalyptic number.

81046355 is a deficient number, since it is larger than the sum of its proper divisors (23690557).

81046355 is a wasteful number, since it uses less digits than its factorization.

81046355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246885.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 81046355 is about 9002.5749094356. The cubic root of 81046355 is about 432.7573929804.

The spelling of 81046355 in words is "eighty-one million, forty-six thousand, three hundred fifty-five".