803191057 has 4 divisors (see below), whose sum is σ = 804827376. Its totient is φ = 801554740.

The previous prime is 803190967. The next prime is 803191069. The reversal of 803191057 is 750191308.

It is a happy number.

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-803191057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (803191357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817423 + ... + 818404.

It is an arithmetic number, because the mean of its divisors is an integer number (201206844).

Almost surely, 2^803191057 is an apocalyptic number.

It is an amenable number.

803191057 is a deficient number, since it is larger than the sum of its proper divisors (1636319).

803191057 is a wasteful number, since it uses less digits than its factorization.

803191057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636318.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 803191057 is about 28340.6255576690. The cubic root of 803191057 is about 929.5504270967.

The spelling of 803191057 in words is "eight hundred three million, one hundred ninety-one thousand, fifty-seven".