34180621 has 2 divisors, whose sum is σ = 34180622. Its totient is φ = 34180620.

The previous prime is 34180577. The next prime is 34180633. The reversal of 34180621 is 12608143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 6502500 = 5261^2 + 2550^2 .

It is an emirp because it is prime and its reverse (12608143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34180621 - 2⁹ = 34180109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34180661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17090310 + 17090311.

It is an arithmetic number, because the mean of its divisors is an integer number (17090311).

Almost surely, 2^34180621 is an apocalyptic number.

It is an amenable number.

34180621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34180621 is an equidigital number, since it uses as much as digits as its factorization.

34180621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 34180621 is about 5846.4195025674. The cubic root of 34180621 is about 324.5338358185.

Adding to 34180621 its reverse (12608143), we get a palindrome (46788764).

The spelling of 34180621 in words is "thirty-four million, one hundred eighty thousand, six hundred twenty-one".