385268551 has 4 divisors (see below), whose sum is σ = 386053704. Its totient is φ = 384483400.

The previous prime is 385268503. The next prime is 385268557. The reversal of 385268551 is 155862583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385268551 - 2¹¹ = 385266503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385268498 and 385268507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385268557) 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, 391840 + ... + 392821.

It is an arithmetic number, because the mean of its divisors is an integer number (96513426).

Almost surely, 2^385268551 is an apocalyptic number.

385268551 is a deficient number, since it is larger than the sum of its proper divisors (785153).

385268551 is an equidigital number, since it uses as much as digits as its factorization.

385268551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785152.

The product of its digits is 288000, while the sum is 43.

The square root of 385268551 is about 19628.2589905473. The cubic root of 385268551 is about 727.6477428513.

The spelling of 385268551 in words is "three hundred eighty-five million, two hundred sixty-eight thousand, five hundred fifty-one".