155622612 has 12 divisors (see below), whose sum is σ = 363119456. Its totient is φ = 51874200.

The previous prime is 155622611. The next prime is 155622637. The reversal of 155622612 is 216226551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 155622612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155622611) 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 3 ways as a sum of consecutive naturals, for example, 6484264 + ... + 6484287.

Almost surely, 2^155622612 is an apocalyptic number.

155622612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155622612 is an abundant number, since it is smaller than the sum of its proper divisors (207496844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155622612 is a wasteful number, since it uses less digits than its factorization.

155622612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12968558 (or 12968556 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 155622612 is about 12474.8792378924. The cubic root of 155622612 is about 537.8868167076.

The spelling of 155622612 in words is "one hundred fifty-five million, six hundred twenty-two thousand, six hundred twelve".