345555881 has 8 divisors (see below), whose sum is σ = 377122944. Its totient is φ = 314014320.

The previous prime is 345555877. The next prime is 345555929. The reversal of 345555881 is 188555543.

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 345555881 - 2² = 345555877 is a prime.

It is a super-2 number, since 2×345555881² = 238817733787372322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345555811) 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, 32075 + ... + 41471.

It is an arithmetic number, because the mean of its divisors is an integer number (47140368).

Almost surely, 2^345555881 is an apocalyptic number.

It is an amenable number.

345555881 is a deficient number, since it is larger than the sum of its proper divisors (31567063).

345555881 is a wasteful number, since it uses less digits than its factorization.

345555881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12751.

The product of its digits is 480000, while the sum is 44.

The square root of 345555881 is about 18589.1334117543. The cubic root of 345555881 is about 701.7343936923.

The spelling of 345555881 in words is "three hundred forty-five million, five hundred fifty-five thousand, eight hundred eighty-one".