56047231 has 4 divisors (see below), whose sum is σ = 56340864. Its totient is φ = 55753600.

The previous prime is 56047219. The next prime is 56047241. The reversal of 56047231 is 13274065.

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

It is a cyclic number.

It is not a de Polignac number, because 56047231 - 2¹¹ = 56045183 is a prime.

It is a super-2 number, since 2×56047231² = 6282584205534722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56047231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56047241) 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, 146530 + ... + 146911.

It is an arithmetic number, because the mean of its divisors is an integer number (14085216).

Almost surely, 2^56047231 is an apocalyptic number.

56047231 is a deficient number, since it is larger than the sum of its proper divisors (293633).

56047231 is a wasteful number, since it uses less digits than its factorization.

56047231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293632.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 56047231 is about 7486.4698623584. The cubic root of 56047231 is about 382.6937654402.

The spelling of 56047231 in words is "fifty-six million, forty-seven thousand, two hundred thirty-one".