155244055 has 16 divisors (see below), whose sum is σ = 190802304. Its totient is φ = 121204480.

The previous prime is 155244029. The next prime is 155244059. The reversal of 155244055 is 550442551.

It is not a de Polignac number, because 155244055 - 2¹¹ = 155242007 is a prime.

It is a super-2 number, since 2×155244055² = 48201433225686050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155244059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107619 + ... + 109051.

It is an arithmetic number, because the mean of its divisors is an integer number (11925144).

Almost surely, 2^155244055 is an apocalyptic number.

155244055 is a deficient number, since it is larger than the sum of its proper divisors (35558249).

155244055 is a wasteful number, since it uses less digits than its factorization.

155244055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 155244055 is about 12459.6972274610. The cubic root of 155244055 is about 537.4503202687.

The spelling of 155244055 in words is "one hundred fifty-five million, two hundred forty-four thousand, fifty-five".