82502501 has 4 divisors (see below), whose sum is σ = 85163904. Its totient is φ = 79841100.

The previous prime is 82502471. The next prime is 82502573. The reversal of 82502501 is 10520528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82502501 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 (82502201) 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, 1330655 + ... + 1330716.

It is an arithmetic number, because the mean of its divisors is an integer number (21290976).

Almost surely, 2^82502501 is an apocalyptic number.

It is an amenable number.

82502501 is a deficient number, since it is larger than the sum of its proper divisors (2661403).

82502501 is a wasteful number, since it uses less digits than its factorization.

82502501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661402.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 82502501 is about 9083.0887367679. The cubic root of 82502501 is about 435.3337835396. Note that the first 3 decimals are identical.

The spelling of 82502501 in words is "eighty-two million, five hundred two thousand, five hundred one".