345972556 has 12 divisors (see below), whose sum is σ = 605626168. Its totient is φ = 172936512.

The previous prime is 345972547. The next prime is 345972569. The reversal of 345972556 is 655279543.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6355 + ... + 27061.

Almost surely, 2^345972556 is an apocalyptic number.

It is an amenable number.

345972556 is a deficient number, since it is larger than the sum of its proper divisors (259653612).

345972556 is a wasteful number, since it uses less digits than its factorization.

345972556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24888 (or 24886 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 46.

The square root of 345972556 is about 18600.3375238193. The cubic root of 345972556 is about 702.0163333619.

It can be divided in two parts, 345972 and 556, that added together give a triangular number (346528 = T₈₃₂).

The spelling of 345972556 in words is "three hundred forty-five million, nine hundred seventy-two thousand, five hundred fifty-six".