1552121611 has 8 divisors (see below), whose sum is σ = 1572785600. Its totient is φ = 1531483200.

The previous prime is 1552121603. The next prime is 1552121617. The reversal of 1552121611 is 1161212551.

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

It is a cyclic number.

It is not a de Polignac number, because 1552121611 - 2³ = 1552121603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552121617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136825 + ... + 147733.

It is an arithmetic number, because the mean of its divisors is an integer number (196598200).

Almost surely, 2^1552121611 is an apocalyptic number.

1552121611 is a deficient number, since it is larger than the sum of its proper divisors (20663989).

1552121611 is a wasteful number, since it uses less digits than its factorization.

1552121611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12789.

The product of its digits is 600, while the sum is 25.

The square root of 1552121611 is about 39396.9746427311. The cubic root of 1552121611 is about 1157.8223142266.

The spelling of 1552121611 in words is "one billion, five hundred fifty-two million, one hundred twenty-one thousand, six hundred eleven".