30026261 has 2 divisors, whose sum is σ = 30026262. Its totient is φ = 30026260.

The previous prime is 30026239. The next prime is 30026263. The reversal of 30026261 is 16262003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29702500 + 323761 = 5450^2 + 569^2 .

It is an emirp because it is prime and its reverse (16262003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30026261 - 2¹⁴ = 30009877 is a prime.

Together with 30026263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30026263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15013130 + 15013131.

It is an arithmetic number, because the mean of its divisors is an integer number (15013131).

Almost surely, 2^30026261 is an apocalyptic number.

It is an amenable number.

30026261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30026261 is an equidigital number, since it uses as much as digits as its factorization.

30026261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30026261 is about 5479.6223410012. The cubic root of 30026261 is about 310.8138897451.

Adding to 30026261 its reverse (16262003), we get a palindrome (46288264).

The spelling of 30026261 in words is "thirty million, twenty-six thousand, two hundred sixty-one".