385550851 has 4 divisors (see below), whose sum is σ = 440629552. Its totient is φ = 330472152.

The previous prime is 385550849. The next prime is 385550861. The reversal of 385550851 is 158055583.

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 385550851 - 2¹ = 385550849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385550801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27539340 + ... + 27539353.

It is an arithmetic number, because the mean of its divisors is an integer number (110157388).

Almost surely, 2^385550851 is an apocalyptic number.

385550851 is a deficient number, since it is larger than the sum of its proper divisors (55078701).

385550851 is an equidigital number, since it uses as much as digits as its factorization.

385550851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55078700.

The product of its (nonzero) digits is 120000, while the sum is 40.

The square root of 385550851 is about 19635.4488362248. The cubic root of 385550851 is about 727.8254239398.

The spelling of 385550851 in words is "three hundred eighty-five million, five hundred fifty thousand, eight hundred fifty-one".