385509053 has 4 divisors (see below), whose sum is σ = 386246688. Its totient is φ = 384771420.

The previous prime is 385509043. The next prime is 385509077. The reversal of 385509053 is 350905583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350905583 = 7 ⋅50129369.

It is a cyclic number.

It is not a de Polignac number, because 385509053 - 2⁶ = 385508989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 385508998 and 385509016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385509013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368033 + ... + 369078.

It is an arithmetic number, because the mean of its divisors is an integer number (96561672).

Almost surely, 2^385509053 is an apocalyptic number.

It is an amenable number.

385509053 is a deficient number, since it is larger than the sum of its proper divisors (737635).

385509053 is an equidigital number, since it uses as much as digits as its factorization.

385509053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737634.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 385509053 is about 19634.3844568655. The cubic root of 385509053 is about 727.7991215326.

The spelling of 385509053 in words is "three hundred eighty-five million, five hundred nine thousand, fifty-three".