355981197 has 32 divisors (see below), whose sum is σ = 559794816. Its totient is φ = 198374400.

The previous prime is 355981183. The next prime is 355981201. The reversal of 355981197 is 791189553.

It is not a de Polignac number, because 355981197 - 2¹⁰ = 355980173 is a prime.

It is a super-2 number, since 2×355981197² = 253445225235105618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355981697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119073 + ... + 122025.

It is an arithmetic number, because the mean of its divisors is an integer number (17493588).

Almost surely, 2^355981197 is an apocalyptic number.

It is an amenable number.

355981197 is a deficient number, since it is larger than the sum of its proper divisors (203813619).

355981197 is a wasteful number, since it uses less digits than its factorization.

355981197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261.

The product of its digits is 340200, while the sum is 48.

The square root of 355981197 is about 18867.4639790301. The cubic root of 355981197 is about 708.7216280957.

The spelling of 355981197 in words is "three hundred fifty-five million, nine hundred eighty-one thousand, one hundred ninety-seven".