1555229 has 4 divisors (see below), whose sum is σ = 1674876. Its totient is φ = 1435584.

The previous prime is 1555223. The next prime is 1555231. The reversal of 1555229 is 9225551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9225551 = 53 ⋅174067.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 912025 = 802^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555229 - 2¹² = 1551133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555223) 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, 59804 + ... + 59829.

It is an arithmetic number, because the mean of its divisors is an integer number (418719).

2^1555229 is an apocalyptic number.

It is an amenable number.

1555229 is a deficient number, since it is larger than the sum of its proper divisors (119647).

1555229 is a wasteful number, since it uses less digits than its factorization.

1555229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119646.

The product of its digits is 4500, while the sum is 29.

The square root of 1555229 is about 1247.0882085883. The cubic root of 1555229 is about 115.8594462920.

The spelling of 1555229 in words is "one million, five hundred fifty-five thousand, two hundred twenty-nine".