82502401 has 4 divisors (see below), whose sum is σ = 83028052. Its totient is φ = 81976752.

The previous prime is 82502383. The next prime is 82502417. The reversal of 82502401 is 10420528.

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 7420176 + 75082225 = 2724^2 + 8665^2 .

It is a cyclic number.

It is not a de Polignac number, because 82502401 - 2⁹ = 82501889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82502461) 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, 262590 + ... + 262903.

It is an arithmetic number, because the mean of its divisors is an integer number (20757013).

Almost surely, 2^82502401 is an apocalyptic number.

It is an amenable number.

82502401 is a deficient number, since it is larger than the sum of its proper divisors (525651).

82502401 is a wasteful number, since it uses less digits than its factorization.

82502401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525650.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 82502401 is about 9083.0832320309. The cubic root of 82502401 is about 435.3336076525. Note that the first 3 decimals are identical.

Adding to 82502401 its reverse (10420528), we get a palindrome (92922929).

The spelling of 82502401 in words is "eighty-two million, five hundred two thousand, four hundred one".