345452473 has 2 divisors, whose sum is σ = 345452474. Its totient is φ = 345452472.

The previous prime is 345452449. The next prime is 345452489. The reversal of 345452473 is 374254543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173527929 + 171924544 = 13173^2 + 13112^2 .

It is a cyclic number.

It is not a de Polignac number, because 345452473 - 2¹⁷ = 345321401 is a prime.

It is a super-2 number, since 2×345452473² = 238674822203631458, which contains 22 as substring.

It is equal to p_18572185 and since 345452473 and 18572185 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (345452873) 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, 172726236 + 172726237.

It is an arithmetic number, because the mean of its divisors is an integer number (172726237).

Almost surely, 2^345452473 is an apocalyptic number.

It is an amenable number.

345452473 is a deficient number, since it is larger than the sum of its proper divisors (1).

345452473 is an equidigital number, since it uses as much as digits as its factorization.

345452473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 37.

The square root of 345452473 is about 18586.3517937222. The cubic root of 345452473 is about 701.6643884304.

The spelling of 345452473 in words is "three hundred forty-five million, four hundred fifty-two thousand, four hundred seventy-three".