1552220 has 12 divisors (see below), whose sum is σ = 3259704. Its totient is φ = 620880.

The previous prime is 1552217. The next prime is 1552223. The reversal of 1552220 is 222551.

It is an interprime number because it is at equal distance from previous prime (1552217) and next prime (1552223).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38786 + ... + 38825.

It is an arithmetic number, because the mean of its divisors is an integer number (271642).

2^1552220 is an apocalyptic number.

1552220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1552220 is an abundant number, since it is smaller than the sum of its proper divisors (1707484).

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

1552220 is a wasteful number, since it uses less digits than its factorization.

1552220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77620 (or 77618 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1552220 is about 1245.8812142416. The cubic root of 1552220 is about 115.7846778498.

Adding to 1552220 its reverse (222551), we get a palindrome (1774771).

The spelling of 1552220 in words is "one million, five hundred fifty-two thousand, two hundred twenty".