155331055 has 8 divisors (see below), whose sum is σ = 203342544. Its totient is φ = 112968000.

The previous prime is 155331053. The next prime is 155331067. The reversal of 155331055 is 550133551.

155331055 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 not a de Polignac number, because 155331055 - 2¹ = 155331053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155331053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412046 + ... + 1412155.

It is an arithmetic number, because the mean of its divisors is an integer number (25417818).

Almost surely, 2^155331055 is an apocalyptic number.

155331055 is a deficient number, since it is larger than the sum of its proper divisors (48011489).

155331055 is a wasteful number, since it uses less digits than its factorization.

155331055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824217.

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 155331055 is about 12463.1879950517. The cubic root of 155331055 is about 537.5506986611.

The spelling of 155331055 in words is "one hundred fifty-five million, three hundred thirty-one thousand, fifty-five".