3551530121 has 8 divisors (see below), whose sum is σ = 3613154688. Its totient is φ = 3490228000.

The previous prime is 3551530111. The next prime is 3551530139. The reversal of 3551530121 is 1210351553.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3551530121 is a prime.

It is a super-2 number, since 2×3551530121² = 25226732400740549282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551530111) 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 7 ways as a sum of consecutive naturals, for example, 58340 + ... + 102501.

It is an arithmetic number, because the mean of its divisors is an integer number (451644336).

Almost surely, 2^3551530121 is an apocalyptic number.

It is an amenable number.

3551530121 is a deficient number, since it is larger than the sum of its proper divisors (61624567).

3551530121 is a wasteful number, since it uses less digits than its factorization.

3551530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161223.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 3551530121 is about 59594.7155459274. The cubic root of 3551530121 is about 1525.7094426953.

Adding to 3551530121 its reverse (1210351553), we get a palindrome (4761881674).

The spelling of 3551530121 in words is "three billion, five hundred fifty-one million, five hundred thirty thousand, one hundred twenty-one".