155422101 has 8 divisors (see below), whose sum is σ = 209166624. Its totient is φ = 102646160.

The previous prime is 155422097. The next prime is 155422139. The reversal of 155422101 is 101224551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155422101 - 2² = 155422097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155422301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241770 + ... + 242411.

It is an arithmetic number, because the mean of its divisors is an integer number (26145828).

Almost surely, 2^155422101 is an apocalyptic number.

It is an amenable number.

155422101 is a deficient number, since it is larger than the sum of its proper divisors (53744523).

155422101 is a wasteful number, since it uses less digits than its factorization.

155422101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484291.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 155422101 is about 12466.8400567265. The cubic root of 155422101 is about 537.6557050977.

Adding to 155422101 its reverse (101224551), we get a palindrome (256646652).

The spelling of 155422101 in words is "one hundred fifty-five million, four hundred twenty-two thousand, one hundred one".