155312101 has 8 divisors (see below), whose sum is σ = 180849024. Its totient is φ = 130612560.

The previous prime is 155312063. The next prime is 155312167. The reversal of 155312101 is 101213551.

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 155312101 - 2⁷ = 155311973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155312191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208945 + ... + 209686.

It is an arithmetic number, because the mean of its divisors is an integer number (22606128).

Almost surely, 2^155312101 is an apocalyptic number.

It is an amenable number.

155312101 is a deficient number, since it is larger than the sum of its proper divisors (25536923).

155312101 is an equidigital number, since it uses as much as digits as its factorization.

155312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418691.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 155312101 is about 12462.4275725077. The cubic root of 155312101 is about 537.5288332108.

Adding to 155312101 its reverse (101213551), we get a palindrome (256525652).

The spelling of 155312101 in words is "one hundred fifty-five million, three hundred twelve thousand, one hundred one".