386720051 has 4 divisors (see below), whose sum is σ = 386773992. Its totient is φ = 386666112.

The previous prime is 386720039. The next prime is 386720057. The reversal of 386720051 is 150027683.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386720051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386720057) 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, 14201 + ... + 31226.

It is an arithmetic number, because the mean of its divisors is an integer number (96693498).

Almost surely, 2^386720051 is an apocalyptic number.

386720051 is a deficient number, since it is larger than the sum of its proper divisors (53941).

386720051 is an equidigital number, since it uses as much as digits as its factorization.

386720051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53940.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 386720051 is about 19665.1989819580. The cubic root of 386720051 is about 728.5604024127.

The spelling of 386720051 in words is "three hundred eighty-six million, seven hundred twenty thousand, fifty-one".