3551021245 has 16 divisors (see below), whose sum is σ = 4503401280. Its totient is φ = 2680560000.

The previous prime is 3551021237. The next prime is 3551021273. The reversal of 3551021245 is 5421201553.

3551021245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3551021245 - 2³ = 3551021237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50616 + ... + 98305.

It is an arithmetic number, because the mean of its divisors is an integer number (281462580).

Almost surely, 2^3551021245 is an apocalyptic number.

It is an amenable number.

3551021245 is a deficient number, since it is larger than the sum of its proper divisors (952380035).

3551021245 is a wasteful number, since it uses less digits than its factorization.

3551021245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149196.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 3551021245 is about 59590.4459204661. The cubic root of 3551021245 is about 1525.6365695039.

Adding to 3551021245 its reverse (5421201553), we get a palindrome (8972222798).

The spelling of 3551021245 in words is "three billion, five hundred fifty-one million, twenty-one thousand, two hundred forty-five".