81246201 has 8 divisors (see below), whose sum is σ = 108420000. Its totient is φ = 54118272.

The previous prime is 81246199. The next prime is 81246203. The reversal of 81246201 is 10264218.

It is an interprime number because it is at equal distance from previous prime (81246199) and next prime (81246203).

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

It is not a de Polignac number, because 81246201 - 2¹ = 81246199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81246203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7095 + ... + 14588.

It is an arithmetic number, because the mean of its divisors is an integer number (13552500).

Almost surely, 2^81246201 is an apocalyptic number.

It is an amenable number.

81246201 is a deficient number, since it is larger than the sum of its proper divisors (27173799).

81246201 is a wasteful number, since it uses less digits than its factorization.

81246201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22935.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 81246201 is about 9013.6674555921. The cubic root of 81246201 is about 433.1128021194.

The spelling of 81246201 in words is "eighty-one million, two hundred forty-six thousand, two hundred one".