155405853 has 12 divisors (see below), whose sum is σ = 224583840. Its totient is φ = 103553736.

The previous prime is 155405839. The next prime is 155405879. The reversal of 155405853 is 358504551.

It is a happy number.

155405853 is a `hidden beast` number, since 1 + 554 + 0 + 58 + 53 = 666.

It is not a de Polignac number, because 155405853 - 2¹⁷ = 155274781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155405893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31150 + ... + 35792.

It is an arithmetic number, because the mean of its divisors is an integer number (18715320).

Almost surely, 2^155405853 is an apocalyptic number.

It is an amenable number.

155405853 is a deficient number, since it is larger than the sum of its proper divisors (69177987).

155405853 is a wasteful number, since it uses less digits than its factorization.

155405853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8368 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 155405853 is about 12466.1883910039. The cubic root of 155405853 is about 537.6369687355.

The spelling of 155405853 in words is "one hundred fifty-five million, four hundred five thousand, eight hundred fifty-three".