345635551 has 4 divisors (see below), whose sum is σ = 365967072. Its totient is φ = 325304032.

The previous prime is 345635539. The next prime is 345635567. The reversal of 345635551 is 155536543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155536543 = 79 ⋅1968817.

It is a cyclic number.

It is not a de Polignac number, because 345635551 - 2¹⁷ = 345504479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345635551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345635531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10165735 + ... + 10165768.

It is an arithmetic number, because the mean of its divisors is an integer number (91491768).

Almost surely, 2^345635551 is an apocalyptic number.

345635551 is a deficient number, since it is larger than the sum of its proper divisors (20331521).

345635551 is a wasteful number, since it uses less digits than its factorization.

345635551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20331520.

The product of its digits is 135000, while the sum is 37.

The square root of 345635551 is about 18591.2762068665. The cubic root of 345635551 is about 701.7883192522.

The spelling of 345635551 in words is "three hundred forty-five million, six hundred thirty-five thousand, five hundred fifty-one".