1553222 has 16 divisors (see below), whose sum is σ = 2691792. Its totient is φ = 664320.

The previous prime is 1553191. The next prime is 1553249. The reversal of 1553222 is 2223551.

It is a junction number, because it is equal to n+sod(n) for n = 1553194 and 1553203.

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, 1703 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (168237).

2^1553222 is an apocalyptic number.

1553222 is a deficient number, since it is larger than the sum of its proper divisors (1138570).

1553222 is a wasteful number, since it uses less digits than its factorization.

1553222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183.

The product of its digits is 600, while the sum is 20.

The square root of 1553222 is about 1246.2832743803. The cubic root of 1553222 is about 115.8095865381.

Adding to 1553222 its reverse (2223551), we get a palindrome (3776773).

The spelling of 1553222 in words is "one million, five hundred fifty-three thousand, two hundred twenty-two".