345421541 has 2 divisors, whose sum is σ = 345421542. Its totient is φ = 345421540.

The previous prime is 345421513. The next prime is 345421553. The reversal of 345421541 is 145124543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192404641 + 153016900 = 13871^2 + 12370^2 .

It is a cyclic number.

It is not a de Polignac number, because 345421541 - 2¹⁴ = 345405157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345421841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172710770 + 172710771.

It is an arithmetic number, because the mean of its divisors is an integer number (172710771).

Almost surely, 2^345421541 is an apocalyptic number.

It is an amenable number.

345421541 is a deficient number, since it is larger than the sum of its proper divisors (1).

345421541 is an equidigital number, since it uses as much as digits as its factorization.

345421541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 29.

The square root of 345421541 is about 18585.5196591325. The cubic root of 345421541 is about 701.6434453366.

The spelling of 345421541 in words is "three hundred forty-five million, four hundred twenty-one thousand, five hundred forty-one".