802457 has 4 divisors (see below), whose sum is σ = 807120. Its totient is φ = 797796.

The previous prime is 802453. The next prime is 802463. The reversal of 802457 is 754208.

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 not a de Polignac number, because 802457 - 2² = 802453 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 802457.

It is not an unprimeable number, because it can be changed into a prime (802453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2063 + ... + 2420.

It is an arithmetic number, because the mean of its divisors is an integer number (201780).

2⁸⁰²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

802457 is a deficient number, since it is larger than the sum of its proper divisors (4663).

802457 is a wasteful number, since it uses less digits than its factorization.

802457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 802457 is about 895.7996427773. The cubic root of 802457 is about 92.9267160756.

The spelling of 802457 in words is "eight hundred two thousand, four hundred fifty-seven".