345226477 has 2 divisors, whose sum is σ = 345226478. Its totient is φ = 345226476.

The previous prime is 345226459. The next prime is 345226493. The reversal of 345226477 is 774622543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208196041 + 137030436 = 14429^2 + 11706^2 .

It is a cyclic number.

It is not a de Polignac number, because 345226477 - 2²³ = 336837869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345226457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172613238 + 172613239.

It is an arithmetic number, because the mean of its divisors is an integer number (172613239).

Almost surely, 2^345226477 is an apocalyptic number.

It is an amenable number.

345226477 is a deficient number, since it is larger than the sum of its proper divisors (1).

345226477 is an equidigital number, since it uses as much as digits as its factorization.

345226477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 40.

The square root of 345226477 is about 18580.2711767078. The cubic root of 345226477 is about 701.5113447657.

It can be divided in two parts, 3452 and 26477, that added together give a square (29929 = 173²).

The spelling of 345226477 in words is "three hundred forty-five million, two hundred twenty-six thousand, four hundred seventy-seven".