155121214 has 8 divisors (see below), whose sum is σ = 236154888. Its totient is φ = 76402920.

The previous prime is 155121173. The next prime is 155121227. The reversal of 155121214 is 412121551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578677 + ... + 578944.

It is an arithmetic number, because the mean of its divisors is an integer number (29519361).

Almost surely, 2^155121214 is an apocalyptic number.

155121214 is a deficient number, since it is larger than the sum of its proper divisors (81033674).

155121214 is a wasteful number, since it uses less digits than its factorization.

155121214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157690.

The product of its digits is 400, while the sum is 22.

The square root of 155121214 is about 12454.7667180080. The cubic root of 155121214 is about 537.3085255613.

Adding to 155121214 its reverse (412121551), we get a palindrome (567242765).

The spelling of 155121214 in words is "one hundred fifty-five million, one hundred twenty-one thousand, two hundred fourteen".