155522129 has 12 divisors (see below), whose sum is σ = 181407744. Its totient is φ = 132940584.

The previous prime is 155522119. The next prime is 155522131. The reversal of 155522129 is 921225551.

It is not a de Polignac number, because 155522129 - 2²⁴ = 138744913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155522095 and 155522104.

It is not an unprimeable number, because it can be changed into a prime (155522119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14624 + ... + 22910.

It is an arithmetic number, because the mean of its divisors is an integer number (15117312).

Almost surely, 2^155522129 is an apocalyptic number.

It is an amenable number.

155522129 is a deficient number, since it is larger than the sum of its proper divisors (25885615).

155522129 is an equidigital number, since it uses as much as digits as its factorization.

155522129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684 (or 8677 counting only the distinct ones).

The product of its digits is 9000, while the sum is 32.

The square root of 155522129 is about 12470.8511738373. The cubic root of 155522129 is about 537.7710235136.

The spelling of 155522129 in words is "one hundred fifty-five million, five hundred twenty-two thousand, one hundred twenty-nine".