155005455 has 32 divisors (see below), whose sum is σ = 271272960. Its totient is φ = 74954880.

The previous prime is 155005451. The next prime is 155005457. The reversal of 155005455 is 554500551.

155005455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155005455 - 2² = 155005451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155005451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75381 + ... + 77409.

It is an arithmetic number, because the mean of its divisors is an integer number (8477280).

Almost surely, 2^155005455 is an apocalyptic number.

155005455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155005455 is a deficient number, since it is larger than the sum of its proper divisors (116267505).

155005455 is a wasteful number, since it uses less digits than its factorization.

155005455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 155005455 is about 12450.1186741332. The cubic root of 155005455 is about 537.1748370428.

The spelling of 155005455 in words is "one hundred fifty-five million, five thousand, four hundred fifty-five".