155255022 has 64 divisors (see below), whose sum is σ = 375144000. Its totient is φ = 47309184.

The previous prime is 155255017. The next prime is 155255027. The reversal of 155255022 is 220552551.

155255022 is a `hidden beast` number, since 155 + 2 + 5 + 502 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (155255017) and next prime (155255027).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155255027) 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, 75504 + ... + 77532.

It is an arithmetic number, because the mean of its divisors is an integer number (5861625).

Almost surely, 2^155255022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155255022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187572000).

155255022 is an abundant number, since it is smaller than the sum of its proper divisors (219888978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155255022 is a wasteful number, since it uses less digits than its factorization.

155255022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162 (or 2156 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 155255022 is about 12460.1373186655. The cubic root of 155255022 is about 537.4629757804.

The spelling of 155255022 in words is "one hundred fifty-five million, two hundred fifty-five thousand, twenty-two".