1572624161 has 2 divisors, whose sum is σ = 1572624162. Its totient is φ = 1572624160.

The previous prime is 1572624143. The next prime is 1572624169. The reversal of 1572624161 is 1614262751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1268784400 + 303839761 = 35620^2 + 17431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1572624161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1572624169) 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, 786312080 + 786312081.

It is an arithmetic number, because the mean of its divisors is an integer number (786312081).

Almost surely, 2^1572624161 is an apocalyptic number.

It is an amenable number.

1572624161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572624161 is an equidigital number, since it uses as much as digits as its factorization.

1572624161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 1572624161 is about 39656.3256114330. The cubic root of 1572624161 is about 1162.8980650273.

The spelling of 1572624161 in words is "one billion, five hundred seventy-two million, six hundred twenty-four thousand, one hundred sixty-one".