1855229 has 2 divisors, whose sum is σ = 1855230. Its totient is φ = 1855228.

The previous prime is 1855219. The next prime is 1855237. The reversal of 1855229 is 9225581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 139129 = 1310^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1855229 - 2¹² = 1851133 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1855195 and 1855204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927614 + 927615.

It is an arithmetic number, because the mean of its divisors is an integer number (927615).

2^1855229 is an apocalyptic number.

It is an amenable number.

1855229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855229 is an equidigital number, since it uses as much as digits as its factorization.

1855229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 1855229 is about 1362.0679131380. The cubic root of 1855229 is about 122.8756537433.

It can be divided in two parts, 18552 and 29, that added together give a palindrome (18581).

The spelling of 1855229 in words is "one million, eight hundred fifty-five thousand, two hundred twenty-nine".