345336557 has 4 divisors (see below), whose sum is σ = 345490236. Its totient is φ = 345182880.

The previous prime is 345336491. The next prime is 345336581. The reversal of 345336557 is 755633543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275095396 + 70241161 = 16586^2 + 8381^2 .

It is a cyclic number.

It is not a de Polignac number, because 345336557 - 2⁸ = 345336301 is a prime.

It is a super-2 number, since 2×345336557² = 238514675201228498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345336757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73418 + ... + 77979.

It is an arithmetic number, because the mean of its divisors is an integer number (86372559).

Almost surely, 2^345336557 is an apocalyptic number.

It is an amenable number.

345336557 is a deficient number, since it is larger than the sum of its proper divisors (153679).

345336557 is a wasteful number, since it uses less digits than its factorization.

345336557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153678.

The product of its digits is 567000, while the sum is 41.

The square root of 345336557 is about 18583.2332224508. The cubic root of 345336557 is about 701.5858988798.

The spelling of 345336557 in words is "three hundred forty-five million, three hundred thirty-six thousand, five hundred fifty-seven".