801790557 has 16 divisors (see below), whose sum is σ = 1174248960. Its totient is φ = 484376112.

The previous prime is 801790529. The next prime is 801790607. The reversal of 801790557 is 755097108.

It is not a de Polignac number, because 801790557 - 2¹⁰ = 801789533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801790657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304483 + ... + 307104.

It is an arithmetic number, because the mean of its divisors is an integer number (73390560).

Almost surely, 2^801790557 is an apocalyptic number.

It is an amenable number.

801790557 is a deficient number, since it is larger than the sum of its proper divisors (372458403).

801790557 is a wasteful number, since it uses less digits than its factorization.

801790557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611632.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 801790557 is about 28315.9064308385. The cubic root of 801790557 is about 929.0098364312.

The spelling of 801790557 in words is "eight hundred one million, seven hundred ninety thousand, five hundred fifty-seven".