345221554 has 8 divisors (see below), whose sum is σ = 522415260. Its totient is φ = 171083136.

The previous prime is 345221521. The next prime is 345221557. The reversal of 345221554 is 455122543.

It can be written as a sum of positive squares in 2 ways, for example, as 344956329 + 265225 = 18573^2 + 515^2 .

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

It is not an unprimeable number, because it can be changed into a prime (345221557) 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, 763539 + ... + 763990.

Almost surely, 2^345221554 is an apocalyptic number.

345221554 is a deficient number, since it is larger than the sum of its proper divisors (177193706).

345221554 is a wasteful number, since it uses less digits than its factorization.

345221554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527644.

The product of its digits is 24000, while the sum is 31.

The square root of 345221554 is about 18580.1386970065. The cubic root of 345221554 is about 701.5080101849.

The spelling of 345221554 in words is "three hundred forty-five million, two hundred twenty-one thousand, five hundred fifty-four".