797671553 has 4 divisors (see below), whose sum is σ = 911624640. Its totient is φ = 683718468.

The previous prime is 797671541. The next prime is 797671561. The reversal of 797671553 is 355176797.

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 not a de Polignac number, because 797671553 - 2²⁰ = 796622977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (797671513) 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, 56976533 + ... + 56976546.

It is an arithmetic number, because the mean of its divisors is an integer number (227906160).

Almost surely, 2^797671553 is an apocalyptic number.

It is an amenable number.

797671553 is a deficient number, since it is larger than the sum of its proper divisors (113953087).

797671553 is a wasteful number, since it uses less digits than its factorization.

797671553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113953086.

The product of its digits is 1389150, while the sum is 50.

The square root of 797671553 is about 28243.0797364593. The cubic root of 797671553 is about 927.4162503844.

The spelling of 797671553 in words is "seven hundred ninety-seven million, six hundred seventy-one thousand, five hundred fifty-three".