7556223149 has 2 divisors, whose sum is σ = 7556223150. Its totient is φ = 7556223148.

The previous prime is 7556223137. The next prime is 7556223173. The reversal of 7556223149 is 9413226557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4916113225 + 2640109924 = 70115^2 + 51382^2 .

It is a cyclic number.

It is not a de Polignac number, because 7556223149 - 2¹² = 7556219053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7556223949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778111574 + 3778111575.

It is an arithmetic number, because the mean of its divisors is an integer number (3778111575).

Almost surely, 2^7556223149 is an apocalyptic number.

It is an amenable number.

7556223149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7556223149 is an equidigital number, since it uses as much as digits as its factorization.

7556223149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 7556223149 is about 86926.5388072020. The cubic root of 7556223149 is about 1962.3128975424.

The spelling of 7556223149 in words is "seven billion, five hundred fifty-six million, two hundred twenty-three thousand, one hundred forty-nine".