1545222 has 16 divisors (see below), whose sum is σ = 3532032. Its totient is φ = 441480.

The previous prime is 1545217. The next prime is 1545233. The reversal of 1545222 is 2225451.

It is a happy number.

It is a super-2 number, since 2×1545222² = 4775422058568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18354 + ... + 18437.

It is an arithmetic number, because the mean of its divisors is an integer number (220752).

2^1545222 is an apocalyptic number.

1545222 is an abundant number, since it is smaller than the sum of its proper divisors (1986810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1545222 is a wasteful number, since it uses less digits than its factorization.

1545222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36803.

The product of its digits is 800, while the sum is 21.

The square root of 1545222 is about 1243.0695877544. The cubic root of 1545222 is about 115.6104152044.

The spelling of 1545222 in words is "one million, five hundred forty-five thousand, two hundred twenty-two".