1572741061 has 2 divisors, whose sum is σ = 1572741062. Its totient is φ = 1572741060.

The previous prime is 1572741059. The next prime is 1572741083. The reversal of 1572741061 is 1601472751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1070532961 + 502208100 = 32719^2 + 22410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572741061 - 2¹ = 1572741059 is a prime.

Together with 1572741059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1572741091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786370530 + 786370531.

It is an arithmetic number, because the mean of its divisors is an integer number (786370531).

Almost surely, 2^1572741061 is an apocalyptic number.

It is an amenable number.

1572741061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572741061 is an equidigital number, since it uses as much as digits as its factorization.

1572741061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1572741061 is about 39657.7994977028. The cubic root of 1572741061 is about 1162.9268787386.

The spelling of 1572741061 in words is "one billion, five hundred seventy-two million, seven hundred forty-one thousand, sixty-one".