3450355621 has 2 divisors, whose sum is σ = 3450355622. Its totient is φ = 3450355620.

The previous prime is 3450355537. The next prime is 3450355631. The reversal of 3450355621 is 1265530543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3168451521 + 281904100 = 56289^2 + 16790^2 .

It is a cyclic number.

It is not a de Polignac number, because 3450355621 - 2⁹ = 3450355109 is a prime.

It is a super-2 number, since 2×3450355621² = 23809907822732591282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3450355631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1725177810 + 1725177811.

It is an arithmetic number, because the mean of its divisors is an integer number (1725177811).

Almost surely, 2^3450355621 is an apocalyptic number.

It is an amenable number.

3450355621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3450355621 is an equidigital number, since it uses as much as digits as its factorization.

3450355621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 3450355621 is about 58739.7277913339. The cubic root of 3450355621 is about 1511.0817243478.

The spelling of 3450355621 in words is "three billion, four hundred fifty million, three hundred fifty-five thousand, six hundred twenty-one".