155482378 has 4 divisors (see below), whose sum is σ = 233223570. Its totient is φ = 77741188.

The previous prime is 155482363. The next prime is 155482381. The reversal of 155482378 is 873284551.

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., 136585969 + 18896409 = 11687^2 + 4347^2 .

It is an unprimeable number.

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, 38870593 + ... + 38870596.

Almost surely, 2^155482378 is an apocalyptic number.

155482378 is a deficient number, since it is larger than the sum of its proper divisors (77741192).

155482378 is an equidigital number, since it uses as much as digits as its factorization.

155482378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77741191.

The product of its digits is 268800, while the sum is 43.

The square root of 155482378 is about 12469.2573154940. The cubic root of 155482378 is about 537.7252020440.

The spelling of 155482378 in words is "one hundred fifty-five million, four hundred eighty-two thousand, three hundred seventy-eight".