5131222 has 4 divisors (see below), whose sum is σ = 7696836. Its totient is φ = 2565610.

The previous prime is 5131219. The next prime is 5131223. The reversal of 5131222 is 2221315.

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

It is a junction number, because it is equal to n+sod(n) for n = 5131196 and 5131205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131223) 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 as a sum of consecutive naturals, namely, 1282804 + ... + 1282807.

It is an arithmetic number, because the mean of its divisors is an integer number (1924209).

Almost surely, 2^5131222 is an apocalyptic number.

5131222 is a deficient number, since it is larger than the sum of its proper divisors (2565614).

5131222 is a wasteful number, since it uses less digits than its factorization.

5131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565613.

The product of its digits is 120, while the sum is 16.

The square root of 5131222 is about 2265.2200776084. The cubic root of 5131222 is about 172.4806055350.

Subtracting from 5131222 its sum of digits (16), we obtain a triangular number (5131206 = T₃₂₀₃).

Adding to 5131222 its reverse (2221315), we get a palindrome (7352537).

The spelling of 5131222 in words is "five million, one hundred thirty-one thousand, two hundred twenty-two".