65199157 has 2 divisors, whose sum is σ = 65199158. Its totient is φ = 65199156.

The previous prime is 65199151. The next prime is 65199161. The reversal of 65199157 is 75199156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64738116 + 461041 = 8046^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 65199157 - 2³ = 65199149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65199151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32599578 + 32599579.

It is an arithmetic number, because the mean of its divisors is an integer number (32599579).

Almost surely, 2^65199157 is an apocalyptic number.

It is an amenable number.

65199157 is a deficient number, since it is larger than the sum of its proper divisors (1).

65199157 is an equidigital number, since it uses as much as digits as its factorization.

65199157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 85050, while the sum is 43.

The square root of 65199157 is about 8074.5994947118. The cubic root of 65199157 is about 402.4828011117.

Subtracting 65199157 from its reverse (75199156), we obtain a palindrome (9999999).

It can be divided in two parts, 65199 and 157, that added together give a palindrome (65356).

The spelling of 65199157 in words is "sixty-five million, one hundred ninety-nine thousand, one hundred fifty-seven".