155671212 has 24 divisors (see below), whose sum is σ = 374950912. Its totient is φ = 50216400.

The previous prime is 155671211. The next prime is 155671267. The reversal of 155671212 is 212176551.

155671212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 155671212.

It is not an unprimeable number, because it can be changed into a prime (155671211) 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, 208864 + ... + 209607.

Almost surely, 2^155671212 is an apocalyptic number.

155671212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155671212 is an abundant number, since it is smaller than the sum of its proper divisors (219279700).

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

155671212 is a wasteful number, since it uses less digits than its factorization.

155671212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418509 (or 418507 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The square root of 155671212 is about 12476.8270004837. The cubic root of 155671212 is about 537.9428038125.

The spelling of 155671212 in words is "one hundred fifty-five million, six hundred seventy-one thousand, two hundred twelve".