155222014 has 4 divisors (see below), whose sum is σ = 232833024. Its totient is φ = 77611006.

The previous prime is 155221999. The next prime is 155222027. The reversal of 155222014 is 410222551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 410222551 = 73 ⋅5619487.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38805502 + ... + 38805505.

It is an arithmetic number, because the mean of its divisors is an integer number (58208256).

Almost surely, 2^155222014 is an apocalyptic number.

155222014 is a deficient number, since it is larger than the sum of its proper divisors (77611010).

155222014 is an equidigital number, since it uses as much as digits as its factorization.

155222014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77611009.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 155222014 is about 12458.8127042668. The cubic root of 155222014 is about 537.4248839684.

Adding to 155222014 its reverse (410222551), we get a palindrome (565444565).

The spelling of 155222014 in words is "one hundred fifty-five million, two hundred twenty-two thousand, fourteen".