65012251 has 2 divisors, whose sum is σ = 65012252. Its totient is φ = 65012250.

The previous prime is 65012231. The next prime is 65012257. The reversal of 65012251 is 15221056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65012251 - 2¹¹ = 65010203 is a prime.

It is not a weakly prime, because it can be changed into another prime (65012257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32506125 + 32506126.

It is an arithmetic number, because the mean of its divisors is an integer number (32506126).

Almost surely, 2^65012251 is an apocalyptic number.

65012251 is the 5100-th centered pentagonal number.

65012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

65012251 is an equidigital number, since it uses as much as digits as its factorization.

65012251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 65012251 is about 8063.0174872686. The cubic root of 65012251 is about 402.0978347394.

The spelling of 65012251 in words is "sixty-five million, twelve thousand, two hundred fifty-one".