47772231 has 16 divisors (see below), whose sum is σ = 69064800. Its totient is φ = 29197440.

The previous prime is 47772191. The next prime is 47772233. The reversal of 47772231 is 13227774.

It is not a de Polignac number, because 47772231 - 2⁷ = 47772103 is a prime.

It is a super-2 number, since 2×47772231² = 4564372109434722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47772192 and 47772201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47772233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1701 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (4316550).

Almost surely, 2^47772231 is an apocalyptic number.

47772231 is a deficient number, since it is larger than the sum of its proper divisors (21292569).

47772231 is a wasteful number, since it uses less digits than its factorization.

47772231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386.

The product of its digits is 16464, while the sum is 33.

The square root of 47772231 is about 6911.7458720645. The cubic root of 47772231 is about 362.8483683948.

It can be divided in two parts, 477722 and 31, that added together give a triangular number (477753 = T₉₇₇).

The spelling of 47772231 in words is "forty-seven million, seven hundred seventy-two thousand, two hundred thirty-one".