81463301 has 4 divisors (see below), whose sum is σ = 81497004. Its totient is φ = 81429600.

The previous prime is 81463297. The next prime is 81463331. The reversal of 81463301 is 10336418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46594276 + 34869025 = 6826^2 + 5905^2 .

It is a cyclic number.

It is not a de Polignac number, because 81463301 - 2² = 81463297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81463331) 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, 12920 + ... + 18161.

It is an arithmetic number, because the mean of its divisors is an integer number (20374251).

Almost surely, 2^81463301 is an apocalyptic number.

It is an amenable number.

81463301 is a deficient number, since it is larger than the sum of its proper divisors (33703).

81463301 is a wasteful number, since it uses less digits than its factorization.

81463301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33702.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 81463301 is about 9025.7022441470. The cubic root of 81463301 is about 433.4982361871.

Adding to 81463301 its reverse (10336418), we get a palindrome (91799719).

The spelling of 81463301 in words is "eighty-one million, four hundred sixty-three thousand, three hundred one".