155501255 has 24 divisors (see below), whose sum is σ = 233769312. Its totient is φ = 98425152.

The previous prime is 155501249. The next prime is 155501257. The reversal of 155501255 is 552105551.

It is not a de Polignac number, because 155501255 - 2¹⁰ = 155500231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155501257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21227 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (9740388).

Almost surely, 2^155501255 is an apocalyptic number.

155501255 is a deficient number, since it is larger than the sum of its proper divisors (78268057).

155501255 is a wasteful number, since it uses less digits than its factorization.

155501255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48855 (or 48848 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 155501255 is about 12470.0142341539. The cubic root of 155501255 is about 537.7469627692.

The spelling of 155501255 in words is "one hundred fifty-five million, five hundred one thousand, two hundred fifty-five".