355872561 has 8 divisors (see below), whose sum is σ = 517632864. Its totient is φ = 215680320.

The previous prime is 355872557. The next prime is 355872589. The reversal of 355872561 is 165278553.

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

It is not a de Polignac number, because 355872561 - 2² = 355872557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (355872061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5391976 + ... + 5392041.

It is an arithmetic number, because the mean of its divisors is an integer number (64704108).

Almost surely, 2^355872561 is an apocalyptic number.

It is an amenable number.

355872561 is a deficient number, since it is larger than the sum of its proper divisors (161760303).

355872561 is a wasteful number, since it uses less digits than its factorization.

355872561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784031.

The product of its digits is 252000, while the sum is 42.

The square root of 355872561 is about 18864.5848350818. The cubic root of 355872561 is about 708.6495264259.

The spelling of 355872561 in words is "three hundred fifty-five million, eight hundred seventy-two thousand, five hundred sixty-one".