155299122 has 48 divisors (see below), whose sum is σ = 386399520. Its totient is φ = 44582400.

The previous prime is 155299117. The next prime is 155299127. The reversal of 155299122 is 221992551.

It is a happy number.

155299122 is a `hidden beast` number, since 1 + 5 + 529 + 9 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (155299117) and next prime (155299127).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (155299127) 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, 16879 + ... + 24402.

It is an arithmetic number, because the mean of its divisors is an integer number (8049990).

Almost surely, 2^155299122 is an apocalyptic number.

155299122 is an abundant number, since it is smaller than the sum of its proper divisors (231100398).

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

155299122 is a wasteful number, since it uses less digits than its factorization.

155299122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41319 (or 41316 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 155299122 is about 12461.9068364356. The cubic root of 155299122 is about 537.5138595309.

The spelling of 155299122 in words is "one hundred fifty-five million, two hundred ninety-nine thousand, one hundred twenty-two".