155215162 has 4 divisors (see below), whose sum is σ = 232822746. Its totient is φ = 77607580.

The previous prime is 155215157. The next prime is 155215169. The reversal of 155215162 is 261512551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119705481 + 35509681 = 10941^2 + 5959^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155215162.

It is not an unprimeable number, because it can be changed into a prime (155215169) 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 as a sum of consecutive naturals, namely, 38803789 + ... + 38803792.

Almost surely, 2^155215162 is an apocalyptic number.

155215162 is a deficient number, since it is larger than the sum of its proper divisors (77607584).

155215162 is an equidigital number, since it uses as much as digits as its factorization.

155215162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77607583.

The product of its digits is 3000, while the sum is 28.

The square root of 155215162 is about 12458.5377151574. The cubic root of 155215162 is about 537.4169759632.

The spelling of 155215162 in words is "one hundred fifty-five million, two hundred fifteen thousand, one hundred sixty-two".