51601211 has 2 divisors, whose sum is σ = 51601212. Its totient is φ = 51601210.

The previous prime is 51601157. The next prime is 51601217. The reversal of 51601211 is 11210615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51601211 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51601211.

It is not a weakly prime, because it can be changed into another prime (51601217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800605 + 25800606.

It is an arithmetic number, because the mean of its divisors is an integer number (25800606).

Almost surely, 2^51601211 is an apocalyptic number.

51601211 is a deficient number, since it is larger than the sum of its proper divisors (1).

51601211 is an equidigital number, since it uses as much as digits as its factorization.

51601211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 51601211 is about 7183.3982905029. The cubic root of 51601211 is about 372.2945094262.

Adding to 51601211 its reverse (11210615), we get a palindrome (62811826).

The spelling of 51601211 in words is "fifty-one million, six hundred one thousand, two hundred eleven".