651512201 has 2 divisors, whose sum is σ = 651512202. Its totient is φ = 651512200.

The previous prime is 651512189. The next prime is 651512209. The reversal of 651512201 is 102215156.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625000000 + 26512201 = 25000^2 + 5149^2 .

It is a cyclic number.

It is not a de Polignac number, because 651512201 - 2⁶ = 651512137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (651512209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325756100 + 325756101.

It is an arithmetic number, because the mean of its divisors is an integer number (325756101).

Almost surely, 2^651512201 is an apocalyptic number.

It is an amenable number.

651512201 is a deficient number, since it is larger than the sum of its proper divisors (1).

651512201 is an equidigital number, since it uses as much as digits as its factorization.

651512201 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 23.

The square root of 651512201 is about 25524.7370407611. The cubic root of 651512201 is about 866.9103428381.

Adding to 651512201 its reverse (102215156), we get a palindrome (753727357).

The spelling of 651512201 in words is "six hundred fifty-one million, five hundred twelve thousand, two hundred one".