155001101 has 4 divisors (see below), whose sum is σ = 155952192. Its totient is φ = 154050012.

The previous prime is 155001079. The next prime is 155001127. The reversal of 155001101 is 101100551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155001101 - 2⁶ = 155001037 is a prime.

It is a super-2 number, since 2×155001101² = 48050682622424402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155001191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475301 + ... + 475626.

It is an arithmetic number, because the mean of its divisors is an integer number (38988048).

Almost surely, 2^155001101 is an apocalyptic number.

It is an amenable number.

155001101 is a deficient number, since it is larger than the sum of its proper divisors (951091).

155001101 is an equidigital number, since it uses as much as digits as its factorization.

155001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951090.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 155001101 is about 12449.9438151343. The cubic root of 155001101 is about 537.1698073679.

Adding to 155001101 its reverse (101100551), we get a palindrome (256101652).

The spelling of 155001101 in words is "one hundred fifty-five million, one thousand, one hundred one".