385509001 has 2 divisors, whose sum is σ = 385509002. Its totient is φ = 385509000.

The previous prime is 385508989. The next prime is 385509013. The reversal of 385509001 is 100905583.

It is a balanced prime because it is at equal distance from previous prime (385508989) and next prime (385509013).

It can be written as a sum of positive squares in only one way, i.e., 335439225 + 50069776 = 18315^2 + 7076^2 .

It is an emirp because it is prime and its reverse (100905583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385509001 - 2⁷ = 385508873 is a prime.

It is not a weakly prime, because it can be changed into another prime (385509701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192754500 + 192754501.

It is an arithmetic number, because the mean of its divisors is an integer number (192754501).

Almost surely, 2^385509001 is an apocalyptic number.

It is an amenable number.

385509001 is a deficient number, since it is larger than the sum of its proper divisors (1).

385509001 is an equidigital number, since it uses as much as digits as its factorization.

385509001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 385509001 is about 19634.3831326579. The cubic root of 385509001 is about 727.7990888091.

The spelling of 385509001 in words is "three hundred eighty-five million, five hundred nine thousand, one".