75572227561 has 2 divisors, whose sum is σ = 75572227562. Its totient is φ = 75572227560.

The previous prime is 75572227553. The next prime is 75572227579. The reversal of 75572227561 is 16572227557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49086618025 + 26485609536 = 221555^2 + 162744^2 .

It is a cyclic number.

It is not a de Polignac number, because 75572227561 - 2³ = 75572227553 is a prime.

It is a super-2 number, since 2×75572227561² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75572227361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37786113780 + 37786113781.

It is an arithmetic number, because the mean of its divisors is an integer number (37786113781).

Almost surely, 2^75572227561 is an apocalyptic number.

It is an amenable number.

75572227561 is a deficient number, since it is larger than the sum of its proper divisors (1).

75572227561 is an equidigital number, since it uses as much as digits as its factorization.

75572227561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2058000, while the sum is 49.

The spelling of 75572227561 in words is "seventy-five billion, five hundred seventy-two million, two hundred twenty-seven thousand, five hundred sixty-one".