345321551 has 8 divisors (see below), whose sum is σ = 351376944. Its totient is φ = 339292800.

The previous prime is 345321547. The next prime is 345321607. The reversal of 345321551 is 155123543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345321551 - 2² = 345321547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345323551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20441 + ... + 33293.

It is an arithmetic number, because the mean of its divisors is an integer number (43922118).

Almost surely, 2^345321551 is an apocalyptic number.

345321551 is a deficient number, since it is larger than the sum of its proper divisors (6055393).

345321551 is a wasteful number, since it uses less digits than its factorization.

345321551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13321.

The product of its digits is 9000, while the sum is 29.

The square root of 345321551 is about 18582.8294670107. The cubic root of 345321551 is about 701.5757366672.

The spelling of 345321551 in words is "three hundred forty-five million, three hundred twenty-one thousand, five hundred fifty-one".