83257457 has 4 divisors (see below), whose sum is σ = 83340660. Its totient is φ = 83174256.

The previous prime is 83257451. The next prime is 83257459. The reversal of 83257457 is 75475238.

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 10137856 + 73119601 = 3184^2 + 8551^2 .

It is a cyclic number.

It is not a de Polignac number, because 83257457 - 2¹⁴ = 83241073 is a prime.

It is a super-2 number, since 2×83257457² = 13863608292213698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83257451) 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, 40082 + ... + 42107.

It is an arithmetic number, because the mean of its divisors is an integer number (20835165).

Almost surely, 2^83257457 is an apocalyptic number.

It is an amenable number.

83257457 is a deficient number, since it is larger than the sum of its proper divisors (83203).

83257457 is a wasteful number, since it uses less digits than its factorization.

83257457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83202.

The product of its digits is 235200, while the sum is 41.

The square root of 83257457 is about 9124.5524273797. The cubic root of 83257457 is about 436.6576239476.

The spelling of 83257457 in words is "eighty-three million, two hundred fifty-seven thousand, four hundred fifty-seven".