155424212 has 12 divisors (see below), whose sum is σ = 272356980. Its totient is φ = 77607936.

The previous prime is 155424197. The next prime is 155424221. The reversal of 155424212 is 212424551.

It can be written as a sum of positive squares in 2 ways, for example, as 118287376 + 37136836 = 10876^2 + 6094^2 .

It is a congruent number.

It is an unprimeable number.

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, 22637 + ... + 28692.

It is an arithmetic number, because the mean of its divisors is an integer number (22696415).

Almost surely, 2^155424212 is an apocalyptic number.

It is an amenable number.

155424212 is a deficient number, since it is larger than the sum of its proper divisors (116932768).

155424212 is a wasteful number, since it uses less digits than its factorization.

155424212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52090 (or 52088 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 155424212 is about 12466.9247210369. The cubic root of 155424212 is about 537.6581392990.

Adding to 155424212 its reverse (212424551), we get a palindrome (367848763).

The spelling of 155424212 in words is "one hundred fifty-five million, four hundred twenty-four thousand, two hundred twelve".