1855153 has 2 divisors, whose sum is σ = 1855154. Its totient is φ = 1855152.

The previous prime is 1855123. The next prime is 1855169. The reversal of 1855153 is 3515581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 237169 = 1272^2 + 487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1855153 is a prime.

It is equal to p₁₃₈₉₀₇ and since 1855153 and 138907 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 (1855123) 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, 927576 + 927577.

It is an arithmetic number, because the mean of its divisors is an integer number (927577).

2^1855153 is an apocalyptic number.

It is an amenable number.

1855153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855153 is an equidigital number, since it uses as much as digits as its factorization.

1855153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 28.

The square root of 1855153 is about 1362.0400140965. The cubic root of 1855153 is about 122.8739758413.

The spelling of 1855153 in words is "one million, eight hundred fifty-five thousand, one hundred fifty-three".