56222381 has 4 divisors (see below), whose sum is σ = 56299200. Its totient is φ = 56145564.

The previous prime is 56222363. The next prime is 56222399. The reversal of 56222381 is 18322265.

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.

It is an interprime number because it is at equal distance from previous prime (56222363) and next prime (56222399).

It is a cyclic number.

It is not a de Polignac number, because 56222381 - 2¹⁰ = 56221357 is a prime.

It is a super-2 number, since 2×56222381² = 6321912250618322, 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 (56222081) 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, 37301 + ... + 38778.

It is an arithmetic number, because the mean of its divisors is an integer number (14074800).

Almost surely, 2^56222381 is an apocalyptic number.

It is an amenable number.

56222381 is a deficient number, since it is larger than the sum of its proper divisors (76819).

56222381 is an equidigital number, since it uses as much as digits as its factorization.

56222381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76818.

The product of its digits is 5760, while the sum is 29.

The square root of 56222381 is about 7498.1585072603. The cubic root of 56222381 is about 383.0919957075.

The spelling of 56222381 in words is "fifty-six million, two hundred twenty-two thousand, three hundred eighty-one".