1555227 has 8 divisors (see below), whose sum is σ = 2304080. Its totient is φ = 1036800.

The previous prime is 1555223. The next prime is 1555231. The reversal of 1555227 is 7225551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1555223) and next prime (1555231).

It is not a de Polignac number, because 1555227 - 2² = 1555223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 57601 = 1555227 / (1 + 5 + 5 + 5 + 2 + 2 + 7).

It is a Duffinian number.

1555227 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555227.

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 7 ways as a sum of consecutive naturals, for example, 28774 + ... + 28827.

It is an arithmetic number, because the mean of its divisors is an integer number (288010).

2^1555227 is an apocalyptic number.

1555227 is a deficient number, since it is larger than the sum of its proper divisors (748853).

1555227 is an equidigital number, since it uses as much as digits as its factorization.

1555227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57610 (or 57604 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 1555227 is about 1247.0874067202. The cubic root of 1555227 is about 115.8593966275.

It can be divided in two parts, 15552 and 27, that multiplied together give a square (419904 = 648²).

The spelling of 1555227 in words is "one million, five hundred fifty-five thousand, two hundred twenty-seven".