3555650421 has 12 divisors (see below), whose sum is σ = 5261206860. Its totient is φ = 2312617920.

The previous prime is 3555650401. The next prime is 3555650467. The reversal of 3555650421 is 1240565553.

3555650421 is a `hidden beast` number, since 3 + 55 + 565 + 0 + 42 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 190026225 + 3365624196 = 13785^2 + 58014^2 .

It is not a de Polignac number, because 3555650421 - 2⁵ = 3555650389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555650401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4817586 + ... + 4818323.

It is an arithmetic number, because the mean of its divisors is an integer number (438433905).

Almost surely, 2^3555650421 is an apocalyptic number.

It is an amenable number.

3555650421 is a deficient number, since it is larger than the sum of its proper divisors (1705556439).

3555650421 is a wasteful number, since it uses less digits than its factorization.

3555650421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635956 (or 9635953 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 3555650421 is about 59629.2748656228. The cubic root of 3555650421 is about 1526.2992308452.

The spelling of 3555650421 in words is "three billion, five hundred fifty-five million, six hundred fifty thousand, four hundred twenty-one".