155405255 has 8 divisors (see below), whose sum is σ = 186572400. Its totient is φ = 124266816.

The previous prime is 155405249. The next prime is 155405309. The reversal of 155405255 is 552504551.

155405255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155405255 - 2¹⁶ = 155339719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7451 + ... + 19139.

It is an arithmetic number, because the mean of its divisors is an integer number (23321550).

Almost surely, 2^155405255 is an apocalyptic number.

155405255 is a deficient number, since it is larger than the sum of its proper divisors (31167145).

155405255 is a wasteful number, since it uses less digits than its factorization.

155405255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14353.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 155405255 is about 12466.1644061034. The cubic root of 155405255 is about 537.6362791276.

The spelling of 155405255 in words is "one hundred fifty-five million, four hundred five thousand, two hundred fifty-five".