797157057 has 4 divisors (see below), whose sum is σ = 1062876080. Its totient is φ = 531438036.

The previous prime is 797157019. The next prime is 797157061. The reversal of 797157057 is 750751797.

797157057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 797157057 - 2¹⁰ = 797156033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 797156997 and 797157015.

It is not an unprimeable number, because it can be changed into a prime (797155057) 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, 132859507 + ... + 132859512.

It is an arithmetic number, because the mean of its divisors is an integer number (265719020).

Almost surely, 2^797157057 is an apocalyptic number.

It is an amenable number.

797157057 is a deficient number, since it is larger than the sum of its proper divisors (265719023).

797157057 is a wasteful number, since it uses less digits than its factorization.

797157057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265719022.

The product of its (nonzero) digits is 540225, while the sum is 48.

The square root of 797157057 is about 28233.9699121466. The cubic root of 797157057 is about 927.2168138396.

The spelling of 797157057 in words is "seven hundred ninety-seven million, one hundred fifty-seven thousand, fifty-seven".