3551098621 has 4 divisors (see below), whose sum is σ = 4058398432. Its totient is φ = 3043798812.

The previous prime is 3551098571. The next prime is 3551098631. The reversal of 3551098621 is 1268901553.

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 a cyclic number.

It is not a de Polignac number, because 3551098621 - 2⁷ = 3551098493 is a prime.

It is a super-2 number, since 2×3551098621² = 25220602832136203282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551098631) 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, 253649895 + ... + 253649908.

It is an arithmetic number, because the mean of its divisors is an integer number (1014599608).

Almost surely, 2^3551098621 is an apocalyptic number.

It is an amenable number.

3551098621 is a deficient number, since it is larger than the sum of its proper divisors (507299811).

3551098621 is an equidigital number, since it uses as much as digits as its factorization.

3551098621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507299810.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 3551098621 is about 59591.0951485203. The cubic root of 3551098621 is about 1525.6476505225.

The spelling of 3551098621 in words is "three billion, five hundred fifty-one million, ninety-eight thousand, six hundred twenty-one".