897208282157 has 4 divisors (see below), whose sum is σ = 978772671456. Its totient is φ = 815643892860.

The previous prime is 897208282123. The next prime is 897208282189. The reversal of 897208282157 is 751282802798.

It is a happy number.

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 897208282157 - 2³⁸ = 622330375213 is a prime.

It is a super-2 number, since 2×897208282157² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897208282096 and 897208282105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897208212157) 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, 40782194633 + ... + 40782194654.

It is an arithmetic number, because the mean of its divisors is an integer number (244693167864).

Almost surely, 2^897208282157 is an apocalyptic number.

It is an amenable number.

897208282157 is a deficient number, since it is larger than the sum of its proper divisors (81564389299).

897208282157 is a wasteful number, since it uses less digits than its factorization.

897208282157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81564389298.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 897208282157 in words is "eight hundred ninety-seven billion, two hundred eight million, two hundred eighty-two thousand, one hundred fifty-seven".