155005853 has 2 divisors, whose sum is σ = 155005854. Its totient is φ = 155005852.

The previous prime is 155005849. The next prime is 155005883. The reversal of 155005853 is 358500551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149866564 + 5139289 = 12242^2 + 2267^2 .

It is a cyclic number.

It is not a de Polignac number, because 155005853 - 2² = 155005849 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155005843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77502926 + 77502927.

It is an arithmetic number, because the mean of its divisors is an integer number (77502927).

Almost surely, 2^155005853 is an apocalyptic number.

It is an amenable number.

155005853 is a deficient number, since it is larger than the sum of its proper divisors (1).

155005853 is an equidigital number, since it uses as much as digits as its factorization.

155005853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 155005853 is about 12450.1346579063. The cubic root of 155005853 is about 537.1752968017.

The spelling of 155005853 in words is "one hundred fifty-five million, five thousand, eight hundred fifty-three".