355672121 has 4 divisors (see below), whose sum is σ = 406482432. Its totient is φ = 304861812.

The previous prime is 355672117. The next prime is 355672129. The reversal of 355672121 is 121276553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 355672121 - 2² = 355672117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355672129) 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, 25405145 + ... + 25405158.

It is an arithmetic number, because the mean of its divisors is an integer number (101620608).

Almost surely, 2^355672121 is an apocalyptic number.

It is an amenable number.

355672121 is a deficient number, since it is larger than the sum of its proper divisors (50810311).

355672121 is an equidigital number, since it uses as much as digits as its factorization.

355672121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50810310.

The product of its digits is 12600, while the sum is 32.

The square root of 355672121 is about 18859.2714864599. The cubic root of 355672121 is about 708.5164559558.

The spelling of 355672121 in words is "three hundred fifty-five million, six hundred seventy-two thousand, one hundred twenty-one".