345554773 has 2 divisors, whose sum is σ = 345554774. Its totient is φ = 345554772.

The previous prime is 345554731. The next prime is 345554777. The reversal of 345554773 is 377455543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344213809 + 1340964 = 18553^2 + 1158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345554773 is a prime.

It is a super-2 number, since 2×345554773² = 238816202286163058, which contains 22 as substring.

It is equal to p_18577429 and since 345554773 and 18577429 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345554777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172777386 + 172777387.

It is an arithmetic number, because the mean of its divisors is an integer number (172777387).

Almost surely, 2^345554773 is an apocalyptic number.

It is an amenable number.

345554773 is a deficient number, since it is larger than the sum of its proper divisors (1).

345554773 is an equidigital number, since it uses as much as digits as its factorization.

345554773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 43.

The square root of 345554773 is about 18589.1036093729. The cubic root of 345554773 is about 701.7336436712.

The spelling of 345554773 in words is "three hundred forty-five million, five hundred fifty-four thousand, seven hundred seventy-three".