65512297 has 2 divisors, whose sum is σ = 65512298. Its totient is φ = 65512296.

The previous prime is 65512283. The next prime is 65512319. The reversal of 65512297 is 79221556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65221776 + 290521 = 8076^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 65512297 - 2¹⁹ = 64988009 is a prime.

It is a super-2 number, since 2×65512297² = 8583722116432418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65512217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32756148 + 32756149.

It is an arithmetic number, because the mean of its divisors is an integer number (32756149).

Almost surely, 2^65512297 is an apocalyptic number.

It is an amenable number.

65512297 is a deficient number, since it is larger than the sum of its proper divisors (1).

65512297 is an equidigital number, since it uses as much as digits as its factorization.

65512297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 65512297 is about 8093.9667036627. The cubic root of 65512297 is about 403.1261234830.

The spelling of 65512297 in words is "sixty-five million, five hundred twelve thousand, two hundred ninety-seven".