82974481 has 4 divisors (see below), whose sum is σ = 85835700. Its totient is φ = 80113264.

The previous prime is 82974449. The next prime is 82974487. The reversal of 82974481 is 18447928.

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 58064400 + 24910081 = 7620^2 + 4991^2 .

It is a cyclic number.

It is not a de Polignac number, because 82974481 - 2⁵ = 82974449 is a prime.

It is a super-2 number, since 2×82974481² = 13769528994438722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82974487) 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, 1430566 + ... + 1430623.

It is an arithmetic number, because the mean of its divisors is an integer number (21458925).

Almost surely, 2^82974481 is an apocalyptic number.

It is an amenable number.

82974481 is a deficient number, since it is larger than the sum of its proper divisors (2861219).

82974481 is a wasteful number, since it uses less digits than its factorization.

82974481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861218.

The product of its digits is 129024, while the sum is 43.

The square root of 82974481 is about 9109.0329344009. The cubic root of 82974481 is about 436.1623574701.

The spelling of 82974481 in words is "eighty-two million, nine hundred seventy-four thousand, four hundred eighty-one".