355262421 has 4 divisors (see below), whose sum is σ = 473683232. Its totient is φ = 236841612.

The previous prime is 355262407. The next prime is 355262429. The reversal of 355262421 is 124262553.

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 not a de Polignac number, because 355262421 - 2⁶ = 355262357 is a prime.

It is a super-3 number, since 3×355262421³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355262429) 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, 59210401 + ... + 59210406.

It is an arithmetic number, because the mean of its divisors is an integer number (118420808).

Almost surely, 2^355262421 is an apocalyptic number.

It is an amenable number.

355262421 is a deficient number, since it is larger than the sum of its proper divisors (118420811).

355262421 is a wasteful number, since it uses less digits than its factorization.

355262421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118420810.

The product of its digits is 14400, while the sum is 30.

The square root of 355262421 is about 18848.4063252043. The cubic root of 355262421 is about 708.2443038770.

The spelling of 355262421 in words is "three hundred fifty-five million, two hundred sixty-two thousand, four hundred twenty-one".