897868051 has 2 divisors, whose sum is σ = 897868052. Its totient is φ = 897868050.

The previous prime is 897868031. The next prime is 897868093. The reversal of 897868051 is 150868798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 897868051 - 2⁵ = 897868019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897868051.

It is not a weakly prime, because it can be changed into another prime (897868031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448934025 + 448934026.

It is an arithmetic number, because the mean of its divisors is an integer number (448934026).

Almost surely, 2^897868051 is an apocalyptic number.

897868051 is a deficient number, since it is larger than the sum of its proper divisors (1).

897868051 is an equidigital number, since it uses as much as digits as its factorization.

897868051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 52.

The square root of 897868051 is about 29964.4464490836. The cubic root of 897868051 is about 964.7264210558.

The spelling of 897868051 in words is "eight hundred ninety-seven million, eight hundred sixty-eight thousand, fifty-one".