56226181 has 4 divisors (see below), whose sum is σ = 61337664. Its totient is φ = 51114700.

The previous prime is 56226167. The next prime is 56226197. The reversal of 56226181 is 18162265.

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 a cyclic number.

It is not a de Polignac number, because 56226181 - 2⁹ = 56225669 is a prime.

It is a super-2 number, since 2×56226181² = 6322766859689522, 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 (56226101) 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, 2555725 + ... + 2555746.

It is an arithmetic number, because the mean of its divisors is an integer number (15334416).

Almost surely, 2^56226181 is an apocalyptic number.

It is an amenable number.

56226181 is a deficient number, since it is larger than the sum of its proper divisors (5111483).

56226181 is a wasteful number, since it uses less digits than its factorization.

56226181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111482.

The product of its digits is 5760, while the sum is 31.

The square root of 56226181 is about 7498.4118985289. The cubic root of 56226181 is about 383.1006264150.

The spelling of 56226181 in words is "fifty-six million, two hundred twenty-six thousand, one hundred eighty-one".