64201523 has 2 divisors, whose sum is σ = 64201524. Its totient is φ = 64201522.

The previous prime is 64201517. The next prime is 64201541. The reversal of 64201523 is 32510246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64201523 - 2²² = 60007219 is a prime.

It is not a weakly prime, because it can be changed into another prime (64201583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32100761 + 32100762.

It is an arithmetic number, because the mean of its divisors is an integer number (32100762).

Almost surely, 2^64201523 is an apocalyptic number.

64201523 is a deficient number, since it is larger than the sum of its proper divisors (1).

64201523 is an equidigital number, since it uses as much as digits as its factorization.

64201523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 64201523 is about 8012.5852881576. The cubic root of 64201523 is about 400.4193996894.

Adding to 64201523 its reverse (32510246), we get a palindrome (96711769).

The spelling of 64201523 in words is "sixty-four million, two hundred one thousand, five hundred twenty-three".