155522145 has 16 divisors (see below), whose sum is σ = 249137280. Its totient is φ = 82844544.

The previous prime is 155522131. The next prime is 155522149. The reversal of 155522145 is 541225551.

It is not a de Polignac number, because 155522145 - 2⁸ = 155521889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155522149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7461 + ... + 19149.

It is an arithmetic number, because the mean of its divisors is an integer number (15571080).

Almost surely, 2^155522145 is an apocalyptic number.

155522145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155522145 is a deficient number, since it is larger than the sum of its proper divisors (93615135).

155522145 is a wasteful number, since it uses less digits than its factorization.

155522145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12584.

The product of its digits is 10000, while the sum is 30.

The square root of 155522145 is about 12470.8518153332. The cubic root of 155522145 is about 537.7710419554.

Adding to 155522145 its reverse (541225551), we get a palindrome (696747696).

The spelling of 155522145 in words is "one hundred fifty-five million, five hundred twenty-two thousand, one hundred forty-five".