345206551 has 4 divisors (see below), whose sum is σ = 345247632. Its totient is φ = 345165472.

The previous prime is 345206549. The next prime is 345206567. The reversal of 345206551 is 155602543.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 345206551 - 2¹ = 345206549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345206591) 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, 2866 + ... + 26431.

It is an arithmetic number, because the mean of its divisors is an integer number (86311908).

Almost surely, 2^345206551 is an apocalyptic number.

345206551 is a deficient number, since it is larger than the sum of its proper divisors (41081).

345206551 is a wasteful number, since it uses less digits than its factorization.

345206551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41080.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 345206551 is about 18579.7349550525. The cubic root of 345206551 is about 701.4978477476.

The spelling of 345206551 in words is "three hundred forty-five million, two hundred six thousand, five hundred fifty-one".