897960251 has 2 divisors, whose sum is σ = 897960252. Its totient is φ = 897960250.

The previous prime is 897960241. The next prime is 897960277. The reversal of 897960251 is 152069798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 897960251 - 2⁶ = 897960187 is a prime.

It is a super-2 number, since 2×897960251² = 1612665224751966002, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 897960196 and 897960205.

It is not a weakly prime, because it can be changed into another prime (897960211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448980125 + 448980126.

It is an arithmetic number, because the mean of its divisors is an integer number (448980126).

Almost surely, 2^897960251 is an apocalyptic number.

897960251 is a deficient number, since it is larger than the sum of its proper divisors (1).

897960251 is an equidigital number, since it uses as much as digits as its factorization.

897960251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 897960251 is about 29965.9848995490. The cubic root of 897960251 is about 964.7594417695.

The spelling of 897960251 in words is "eight hundred ninety-seven million, nine hundred sixty thousand, two hundred fifty-one".