30041621 has 2 divisors, whose sum is σ = 30041622. Its totient is φ = 30041620.

The previous prime is 30041597. The next prime is 30041629. The reversal of 30041621 is 12614003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24700900 + 5340721 = 4970^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 30041621 - 2²² = 25847317 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 30041621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30041629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15020810 + 15020811.

It is an arithmetic number, because the mean of its divisors is an integer number (15020811).

Almost surely, 2^30041621 is an apocalyptic number.

It is an amenable number.

30041621 is a deficient number, since it is larger than the sum of its proper divisors (1).

30041621 is an equidigital number, since it uses as much as digits as its factorization.

30041621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30041621 is about 5481.0237182483. The cubic root of 30041621 is about 310.8668798872.

Adding to 30041621 its reverse (12614003), we get a palindrome (42655624).

The spelling of 30041621 in words is "thirty million, forty-one thousand, six hundred twenty-one".