7572662561 has 2 divisors, whose sum is σ = 7572662562. Its totient is φ = 7572662560.

The previous prime is 7572662551. The next prime is 7572662651. The reversal of 7572662561 is 1652662757.

Together with next prime (7572662651) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4635022561 + 2937640000 = 68081^2 + 54200^2 .

It is a cyclic number.

It is not a de Polignac number, because 7572662561 - 2¹⁴ = 7572646177 is a prime.

It is not a weakly prime, because it can be changed into another prime (7572662521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786331280 + 3786331281.

It is an arithmetic number, because the mean of its divisors is an integer number (3786331281).

Almost surely, 2^7572662561 is an apocalyptic number.

It is an amenable number.

7572662561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7572662561 is an equidigital number, since it uses as much as digits as its factorization.

7572662561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 47.

The square root of 7572662561 is about 87021.0466553925. The cubic root of 7572662561 is about 1963.7349441231.

The spelling of 7572662561 in words is "seven billion, five hundred seventy-two million, six hundred sixty-two thousand, five hundred sixty-one".