355125561 has 64 divisors (see below), whose sum is σ = 602726400. Its totient is φ = 181391616.

The previous prime is 355125499. The next prime is 355125569. The reversal of 355125561 is 165521553.

It is not a de Polignac number, because 355125561 - 2¹⁴ = 355109177 is a prime.

It is a super-2 number, since 2×355125561² = 252228328151129442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (355125569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 543511 + ... + 544163.

It is an arithmetic number, because the mean of its divisors is an integer number (9417600).

Almost surely, 2^355125561 is an apocalyptic number.

It is an amenable number.

355125561 is a deficient number, since it is larger than the sum of its proper divisors (247600839).

355125561 is a wasteful number, since it uses less digits than its factorization.

355125561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its digits is 22500, while the sum is 33.

The square root of 355125561 is about 18844.7754298108. The cubic root of 355125561 is about 708.1533450445.

The spelling of 355125561 in words is "three hundred fifty-five million, one hundred twenty-five thousand, five hundred sixty-one".