30601261 has 2 divisors, whose sum is σ = 30601262. Its totient is φ = 30601260.

The previous prime is 30601243. The next prime is 30601271. The reversal of 30601261 is 16210603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17598025 + 13003236 = 4195^2 + 3606^2 .

It is an emirp because it is prime and its reverse (16210603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30601261 - 2¹¹ = 30599213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30601231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15300630 + 15300631.

It is an arithmetic number, because the mean of its divisors is an integer number (15300631).

Almost surely, 2^30601261 is an apocalyptic number.

It is an amenable number.

30601261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30601261 is an equidigital number, since it uses as much as digits as its factorization.

30601261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 30601261 is about 5531.8406520796. The cubic root of 30601261 is about 312.7853768595.

Adding to 30601261 its reverse (16210603), we get a palindrome (46811864).

The spelling of 30601261 in words is "thirty million, six hundred one thousand, two hundred sixty-one".