345553531 has 4 divisors (see below), whose sum is σ = 357469200. Its totient is φ = 333637864.

The previous prime is 345553519. The next prime is 345553573. The reversal of 345553531 is 135355543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135355543 = 953 ⋅142031.

It is a cyclic number.

It is not a de Polignac number, because 345553531 - 2¹⁷ = 345422459 is a prime.

It is a super-2 number, since 2×345553531² = 238814485573135922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345553591) 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, 5957791 + ... + 5957848.

It is an arithmetic number, because the mean of its divisors is an integer number (89367300).

Almost surely, 2^345553531 is an apocalyptic number.

345553531 is a deficient number, since it is larger than the sum of its proper divisors (11915669).

345553531 is a wasteful number, since it uses less digits than its factorization.

345553531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11915668.

The product of its digits is 67500, while the sum is 34.

The square root of 345553531 is about 18589.0702026755. The cubic root of 345553531 is about 701.7328029418.

The spelling of 345553531 in words is "three hundred forty-five million, five hundred fifty-three thousand, five hundred thirty-one".