355561000 has 64 divisors (see below), whose sum is σ = 840041280. Its totient is φ = 140852800.

The previous prime is 355560983. The next prime is 355561033. The reversal of 355561000 is 165553.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 105339 + ... + 108661.

It is an arithmetic number, because the mean of its divisors is an integer number (13125645).

Almost surely, 2^355561000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355561000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420020640).

355561000 is an abundant number, since it is smaller than the sum of its proper divisors (484480280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355561000 is a wasteful number, since it uses less digits than its factorization.

355561000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 355561000 is about 18856.3251987231. The cubic root of 355561000 is about 708.4426620942.

The spelling of 355561000 in words is "three hundred fifty-five million, five hundred sixty-one thousand".