375565381 has 4 divisors (see below), whose sum is σ = 395332000. Its totient is φ = 355798764.

The previous prime is 375565373. The next prime is 375565417. The reversal of 375565381 is 183565573.

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: 183565573 = 311 ⋅590243.

It is a cyclic number.

It is not a de Polignac number, because 375565381 - 2³ = 375565373 is a prime.

It is a super-2 number, since 2×375565381² = 282098710811350322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (375565481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9883281 + ... + 9883318.

It is an arithmetic number, because the mean of its divisors is an integer number (98833000).

Almost surely, 2^375565381 is an apocalyptic number.

It is an amenable number.

375565381 is a deficient number, since it is larger than the sum of its proper divisors (19766619).

375565381 is a wasteful number, since it uses less digits than its factorization.

375565381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19766618.

The product of its digits is 378000, while the sum is 43.

The square root of 375565381 is about 19379.5093075134. The cubic root of 375565381 is about 721.4870122865.

The spelling of 375565381 in words is "three hundred seventy-five million, five hundred sixty-five thousand, three hundred eighty-one".