82581354 has 12 divisors (see below), whose sum is σ = 178926306. Its totient is φ = 27527112.

The previous prime is 82581329. The next prime is 82581361. The reversal of 82581354 is 45318528.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78057225 + 4524129 = 8835^2 + 2127^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2293909 + ... + 2293944.

Almost surely, 2^82581354 is an apocalyptic number.

82581354 is an abundant number, since it is smaller than the sum of its proper divisors (96344952).

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

82581354 is a wasteful number, since it uses less digits than its factorization.

82581354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587861 (or 4587858 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 82581354 is about 9087.4283490986. The cubic root of 82581354 is about 435.4724316369.

The spelling of 82581354 in words is "eighty-two million, five hundred eighty-one thousand, three hundred fifty-four".