155212106 has 24 divisors (see below), whose sum is σ = 274656096. Its totient is φ = 65579640.

The previous prime is 155212103. The next prime is 155212117. The reversal of 155212106 is 601212551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155212103) 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, 4196 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (11444004).

Almost surely, 2^155212106 is an apocalyptic number.

155212106 is a deficient number, since it is larger than the sum of its proper divisors (119443990).

155212106 is a wasteful number, since it uses less digits than its factorization.

155212106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22394 (or 22387 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 155212106 is about 12458.4150677363. The cubic root of 155212106 is about 537.4134489086.

Adding to 155212106 its reverse (601212551), we get a palindrome (756424657).

The spelling of 155212106 in words is "one hundred fifty-five million, two hundred twelve thousand, one hundred six".