355852421 has 4 divisors (see below), whose sum is σ = 365470092. Its totient is φ = 346234752.

The previous prime is 355852373. The next prime is 355852429. The reversal of 355852421 is 124258553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 255552196 + 100300225 = 15986^2 + 10015^2 .

It is not a de Polignac number, because 355852421 - 2¹⁴ = 355836037 is a prime.

It is a super-2 number, since 2×355852421² = 253261891063122482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355852429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4808780 + ... + 4808853.

It is an arithmetic number, because the mean of its divisors is an integer number (91367523).

Almost surely, 2^355852421 is an apocalyptic number.

It is an amenable number.

355852421 is a deficient number, since it is larger than the sum of its proper divisors (9617671).

355852421 is an equidigital number, since it uses as much as digits as its factorization.

355852421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617670.

The product of its digits is 48000, while the sum is 35.

The square root of 355852421 is about 18864.0510230438. The cubic root of 355852421 is about 708.6361579037.

The spelling of 355852421 in words is "three hundred fifty-five million, eight hundred fifty-two thousand, four hundred twenty-one".