81452850 has 24 divisors (see below), whose sum is σ = 202003440. Its totient is φ = 21720720.

The previous prime is 81452843. The next prime is 81452857. The reversal of 81452850 is 5825418.

It is an interprime number because it is at equal distance from previous prime (81452843) and next prime (81452857).

It is not an unprimeable number, because it can be changed into a prime (81452857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271360 + ... + 271659.

It is an arithmetic number, because the mean of its divisors is an integer number (8416810).

Almost surely, 2^81452850 is an apocalyptic number.

81452850 is an abundant number, since it is smaller than the sum of its proper divisors (120550590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81452850 is a wasteful number, since it uses less digits than its factorization.

81452850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543034 (or 543029 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 81452850 is about 9025.1232678562. The cubic root of 81452850 is about 433.4796974351.

The spelling of 81452850 in words is "eighty-one million, four hundred fifty-two thousand, eight hundred fifty".