817498053 has 6 divisors (see below), whose sum is σ = 1180830534. Its totient is φ = 544998696.

The previous prime is 817498049. The next prime is 817498063. The reversal of 817498053 is 350894718.

It can be written as a sum of positive squares in only one way, i.e., 695218689 + 122279364 = 26367^2 + 11058^2 .

It is not a de Polignac number, because 817498053 - 2² = 817498049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817498063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45416550 + ... + 45416567.

It is an arithmetic number, because the mean of its divisors is an integer number (196805089).

Almost surely, 2^817498053 is an apocalyptic number.

It is an amenable number.

817498053 is a deficient number, since it is larger than the sum of its proper divisors (363332481).

817498053 is a wasteful number, since it uses less digits than its factorization.

817498053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90833123 (or 90833120 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 817498053 is about 28591.9228629346. The cubic root of 817498053 is about 935.0372421705.

The spelling of 817498053 in words is "eight hundred seventeen million, four hundred ninety-eight thousand, fifty-three".