1547222 has 4 divisors (see below), whose sum is σ = 2320836. Its totient is φ = 773610.

The previous prime is 1547213. The next prime is 1547239. The reversal of 1547222 is 2227451.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386804 + ... + 386807.

It is an arithmetic number, because the mean of its divisors is an integer number (580209).

2^1547222 is an apocalyptic number.

1547222 is a deficient number, since it is larger than the sum of its proper divisors (773614).

1547222 is an equidigital number, since it uses as much as digits as its factorization.

1547222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773613.

The product of its digits is 1120, while the sum is 23.

The square root of 1547222 is about 1243.8737878097. The cubic root of 1547222 is about 115.6602723651.

The spelling of 1547222 in words is "one million, five hundred forty-seven thousand, two hundred twenty-two".