3551242091 has 4 divisors (see below), whose sum is σ = 3551400384. Its totient is φ = 3551083800.

The previous prime is 3551242031. The next prime is 3551242117. The reversal of 3551242091 is 1902421553.

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-3551242091 is a prime.

It is a super-2 number, since 2×3551242091² = 25222640777780104562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551242031) 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, 38555 + ... + 92676.

It is an arithmetic number, because the mean of its divisors is an integer number (887850096).

Almost surely, 2^3551242091 is an apocalyptic number.

3551242091 is a deficient number, since it is larger than the sum of its proper divisors (158293).

3551242091 is a wasteful number, since it uses less digits than its factorization.

3551242091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158292.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 3551242091 is about 59592.2989236025. The cubic root of 3551242091 is about 1525.6681964384.

The spelling of 3551242091 in words is "three billion, five hundred fifty-one million, two hundred forty-two thousand, ninety-one".