155214445 has 16 divisors (see below), whose sum is σ = 195372288. Its totient is φ = 118238400.

The previous prime is 155214443. The next prime is 155214461. The reversal of 155214445 is 544412551.

It is a happy number.

It is not a de Polignac number, because 155214445 - 2¹ = 155214443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155214443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231 + ... + 17620.

It is an arithmetic number, because the mean of its divisors is an integer number (12210768).

Almost surely, 2^155214445 is an apocalyptic number.

It is an amenable number.

155214445 is a deficient number, since it is larger than the sum of its proper divisors (40157843).

155214445 is a wasteful number, since it uses less digits than its factorization.

155214445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17940.

The product of its digits is 16000, while the sum is 31.

The square root of 155214445 is about 12458.5089396765. The cubic root of 155214445 is about 537.4161484484.

Adding to 155214445 its reverse (544412551), we get a palindrome (699626996).

The spelling of 155214445 in words is "one hundred fifty-five million, two hundred fourteen thousand, four hundred forty-five".