381272051 has 4 divisors (see below), whose sum is σ = 382232832. Its totient is φ = 380311272.

The previous prime is 381272029. The next prime is 381272053. The reversal of 381272051 is 150272183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150272183 = 911 ⋅164953.

It is a cyclic number.

It is not a de Polignac number, because 381272051 - 2⁶ = 381271987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381272053) 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, 479795 + ... + 480588.

It is an arithmetic number, because the mean of its divisors is an integer number (95558208).

Almost surely, 2^381272051 is an apocalyptic number.

381272051 is a deficient number, since it is larger than the sum of its proper divisors (960781).

381272051 is an equidigital number, since it uses as much as digits as its factorization.

381272051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960780.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 381272051 is about 19526.1888498498. The cubic root of 381272051 is about 725.1229603575.

The spelling of 381272051 in words is "three hundred eighty-one million, two hundred seventy-two thousand, fifty-one".