82187453 has 4 divisors (see below), whose sum is σ = 82248348. Its totient is φ = 82126560.

The previous prime is 82187447. The next prime is 82187461. The reversal of 82187453 is 35478128.

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 10903204 + 71284249 = 3302^2 + 8443^2 .

It is a cyclic number.

It is not a de Polignac number, because 82187453 - 2¹⁸ = 81925309 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 (82187423) 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, 28376 + ... + 31137.

It is an arithmetic number, because the mean of its divisors is an integer number (20562087).

Almost surely, 2^82187453 is an apocalyptic number.

It is an amenable number.

82187453 is a deficient number, since it is larger than the sum of its proper divisors (60895).

82187453 is a wasteful number, since it uses less digits than its factorization.

82187453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60894.

The product of its digits is 53760, while the sum is 38.

The square root of 82187453 is about 9065.7295900551. The cubic root of 82187453 is about 434.7789478896.

The spelling of 82187453 in words is "eighty-two million, one hundred eighty-seven thousand, four hundred fifty-three".