1552225811 has 4 divisors (see below), whose sum is σ = 1558666824. Its totient is φ = 1545784800.

The previous prime is 1552225789. The next prime is 1552225823. The reversal of 1552225811 is 1185222551.

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-1552225811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552225861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220145 + ... + 3220626.

It is an arithmetic number, because the mean of its divisors is an integer number (389666706).

Almost surely, 2^1552225811 is an apocalyptic number.

1552225811 is a deficient number, since it is larger than the sum of its proper divisors (6441013).

1552225811 is an equidigital number, since it uses as much as digits as its factorization.

1552225811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6441012.

The product of its digits is 8000, while the sum is 32.

The square root of 1552225811 is about 39398.2970571064. The cubic root of 1552225811 is about 1157.8482233617.

The spelling of 1552225811 in words is "one billion, five hundred fifty-two million, two hundred twenty-five thousand, eight hundred eleven".