345981541 has 2 divisors, whose sum is σ = 345981542. Its totient is φ = 345981540.

The previous prime is 345981539. The next prime is 345981547. The reversal of 345981541 is 145189543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293128641 + 52852900 = 17121^2 + 7270^2 .

It is a cyclic number.

It is not a de Polignac number, because 345981541 - 2¹ = 345981539 is a prime.

Together with 345981539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 345981494 and 345981503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345981547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172990770 + 172990771.

It is an arithmetic number, because the mean of its divisors is an integer number (172990771).

Almost surely, 2^345981541 is an apocalyptic number.

It is an amenable number.

345981541 is a deficient number, since it is larger than the sum of its proper divisors (1).

345981541 is an equidigital number, since it uses as much as digits as its factorization.

345981541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 345981541 is about 18600.5790501264. The cubic root of 345981541 is about 702.0224104933.

The spelling of 345981541 in words is "three hundred forty-five million, nine hundred eighty-one thousand, five hundred forty-one".