799275557 has 4 divisors (see below), whose sum is σ = 802120236. Its totient is φ = 796430880.

The previous prime is 799275523. The next prime is 799275559. The reversal of 799275557 is 755572997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755572997 = 439 ⋅1721123.

It can be written as a sum of positive squares in 2 ways, for example, as 365344996 + 433930561 = 19114^2 + 20831^2 .

It is a cyclic number.

It is not a de Polignac number, because 799275557 - 2⁶ = 799275493 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 (799275559) 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, 1421918 + ... + 1422479.

It is an arithmetic number, because the mean of its divisors is an integer number (200530059).

Almost surely, 2^799275557 is an apocalyptic number.

It is an amenable number.

799275557 is a deficient number, since it is larger than the sum of its proper divisors (2844679).

799275557 is a wasteful number, since it uses less digits than its factorization.

799275557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844678.

The product of its digits is 6945750, while the sum is 56.

The square root of 799275557 is about 28271.4618829660. The cubic root of 799275557 is about 928.0374682188.

The spelling of 799275557 in words is "seven hundred ninety-nine million, two hundred seventy-five thousand, five hundred fifty-seven".