3742055561 has 2 divisors, whose sum is σ = 3742055562. Its totient is φ = 3742055560.

The previous prime is 3742055549. The next prime is 3742055579. The reversal of 3742055561 is 1655502473.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2889707536 + 852348025 = 53756^2 + 29195^2 .

It is a cyclic number.

It is not a de Polignac number, because 3742055561 - 2²⁶ = 3674946697 is a prime.

It is a super-2 number, since 2×3742055561² = 28005959643222049442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3742055591) 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 as a sum of consecutive naturals, namely, 1871027780 + 1871027781.

It is an arithmetic number, because the mean of its divisors is an integer number (1871027781).

Almost surely, 2^3742055561 is an apocalyptic number.

It is an amenable number.

3742055561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3742055561 is an equidigital number, since it uses as much as digits as its factorization.

3742055561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 3742055561 is about 61172.3431053609. The cubic root of 3742055561 is about 1552.5183564584.

The spelling of 3742055561 in words is "three billion, seven hundred forty-two million, fifty-five thousand, five hundred sixty-one".