82507403 has 4 divisors (see below), whose sum is σ = 90008088. Its totient is φ = 75006720.

The previous prime is 82507393. The next prime is 82507423. The reversal of 82507403 is 30470528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82507403 - 2⁶ = 82507339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82507423) 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, 3750326 + ... + 3750347.

It is an arithmetic number, because the mean of its divisors is an integer number (22502022).

Almost surely, 2^82507403 is an apocalyptic number.

82507403 is a deficient number, since it is larger than the sum of its proper divisors (7500685).

82507403 is a wasteful number, since it uses less digits than its factorization.

82507403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500684.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 82507403 is about 9083.3585748885. The cubic root of 82507403 is about 435.3424053548.

The spelling of 82507403 in words is "eighty-two million, five hundred seven thousand, four hundred three".