1572001313 has 2 divisors, whose sum is σ = 1572001314. Its totient is φ = 1572001312.

The previous prime is 1572001283. The next prime is 1572001357. The reversal of 1572001313 is 3131002751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830419489 + 741581824 = 28817^2 + 27232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1572001313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1572001363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786000656 + 786000657.

It is an arithmetic number, because the mean of its divisors is an integer number (786000657).

Almost surely, 2^1572001313 is an apocalyptic number.

It is an amenable number.

1572001313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572001313 is an equidigital number, since it uses as much as digits as its factorization.

1572001313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1572001313 is about 39648.4717612167. The cubic root of 1572001313 is about 1162.7445203141.

The spelling of 1572001313 in words is "one billion, five hundred seventy-two million, one thousand, three hundred thirteen".