1855253 has 2 divisors, whose sum is σ = 1855254. Its totient is φ = 1855252.

The previous prime is 1855247. The next prime is 1855267. The reversal of 1855253 is 3525581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 54289 = 1342^2 + 233^2 .

It is an emirp because it is prime and its reverse (3525581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1855253 - 2⁴ = 1855237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₁₃₈₉₁₇ and since 1855253 and 138917 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927626 + 927627.

It is an arithmetic number, because the mean of its divisors is an integer number (927627).

2^1855253 is an apocalyptic number.

It is an amenable number.

1855253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855253 is an equidigital number, since it uses as much as digits as its factorization.

1855253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 1855253 is about 1362.0767232429. The cubic root of 1855253 is about 122.8761835976.

The spelling of 1855253 in words is "one million, eight hundred fifty-five thousand, two hundred fifty-three".