155220014 has 8 divisors (see below), whose sum is σ = 238508928. Its totient is φ = 75717040.

The previous prime is 155219993. The next prime is 155220017. The reversal of 155220014 is 410022551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155220017) 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 3 ways as a sum of consecutive naturals, for example, 946382 + ... + 946545.

It is an arithmetic number, because the mean of its divisors is an integer number (29813616).

Almost surely, 2^155220014 is an apocalyptic number.

155220014 is a deficient number, since it is larger than the sum of its proper divisors (83288914).

155220014 is a wasteful number, since it uses less digits than its factorization.

155220014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892970.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 155220014 is about 12458.7324395381. The cubic root of 155220014 is about 537.4225757598.

Adding to 155220014 its reverse (410022551), we get a palindrome (565242565).

The spelling of 155220014 in words is "one hundred fifty-five million, two hundred twenty thousand, fourteen".