3553425021 has 4 divisors (see below), whose sum is σ = 4737900032. Its totient is φ = 2368950012.

The previous prime is 3553424971. The next prime is 3553425041. The reversal of 3553425021 is 1205243553.

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 3553425021 - 2⁶ = 3553424957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3553425021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3553425041) 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, 592237501 + ... + 592237506.

It is an arithmetic number, because the mean of its divisors is an integer number (1184475008).

Almost surely, 2^3553425021 is an apocalyptic number.

It is an amenable number.

3553425021 is a deficient number, since it is larger than the sum of its proper divisors (1184475011).

3553425021 is a wasteful number, since it uses less digits than its factorization.

3553425021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184475010.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 3553425021 is about 59610.6116475917. The cubic root of 3553425021 is about 1525.9807391699.

Adding to 3553425021 its reverse (1205243553), we get a palindrome (4758668574).

The spelling of 3553425021 in words is "three billion, five hundred fifty-three million, four hundred twenty-five thousand, twenty-one".