3551212243 has 4 divisors (see below), whose sum is σ = 3560157760. Its totient is φ = 3542266728.

The previous prime is 3551212237. The next prime is 3551212277. The reversal of 3551212243 is 3422121553.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3551212243 is a prime.

It is a super-2 number, since 2×3551212243² = 25222216789666182098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551218243) 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, 4472163 + ... + 4472956.

It is an arithmetic number, because the mean of its divisors is an integer number (890039440).

Almost surely, 2^3551212243 is an apocalyptic number.

3551212243 is a deficient number, since it is larger than the sum of its proper divisors (8945517).

3551212243 is an equidigital number, since it uses as much as digits as its factorization.

3551212243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8945516.

The product of its digits is 7200, while the sum is 28.

The square root of 3551212243 is about 59592.0484880324. The cubic root of 3551212243 is about 1525.6639220398.

Adding to 3551212243 its reverse (3422121553), we get a palindrome (6973333796).

The spelling of 3551212243 in words is "three billion, five hundred fifty-one million, two hundred twelve thousand, two hundred forty-three".