87851297 has 2 divisors, whose sum is σ = 87851298. Its totient is φ = 87851296.

The previous prime is 87851293. The next prime is 87851317. The reversal of 87851297 is 79215878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 43349056 = 6671^2 + 6584^2 .

It is a cyclic number.

It is not a de Polignac number, because 87851297 - 2² = 87851293 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87851293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43925648 + 43925649.

It is an arithmetic number, because the mean of its divisors is an integer number (43925649).

Almost surely, 2^87851297 is an apocalyptic number.

It is an amenable number.

87851297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87851297 is an equidigital number, since it uses as much as digits as its factorization.

87851297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The square root of 87851297 is about 9372.9022719753. The cubic root of 87851297 is about 444.5453370786.

The spelling of 87851297 in words is "eighty-seven million, eight hundred fifty-one thousand, two hundred ninety-seven".