3550891421 has 8 divisors (see below), whose sum is σ = 4427085504. Its totient is φ = 2766928320.

The previous prime is 3550891417. The next prime is 3550891423. The reversal of 3550891421 is 1241980553.

It is a happy number.

3550891421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3550891421 - 2² = 3550891417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3550891423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23057660 + ... + 23057813.

It is an arithmetic number, because the mean of its divisors is an integer number (553385688).

Almost surely, 2^3550891421 is an apocalyptic number.

It is an amenable number.

3550891421 is a deficient number, since it is larger than the sum of its proper divisors (876194083).

3550891421 is a wasteful number, since it uses less digits than its factorization.

3550891421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46115491.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 3550891421 is about 59589.3566083743. The cubic root of 3550891421 is about 1525.6179770444.

The spelling of 3550891421 in words is "three billion, five hundred fifty million, eight hundred ninety-one thousand, four hundred twenty-one".