155978267 has 8 divisors (see below), whose sum is σ = 163279872. Its totient is φ = 148818600.

The previous prime is 155978261. The next prime is 155978279. The reversal of 155978267 is 762879551.

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

It is not a de Polignac number, because 155978267 - 2¹² = 155974171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155978261) 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 7 ways as a sum of consecutive naturals, for example, 33233 + ... + 37634.

It is an arithmetic number, because the mean of its divisors is an integer number (20409984).

Almost surely, 2^155978267 is an apocalyptic number.

155978267 is a deficient number, since it is larger than the sum of its proper divisors (7301605).

155978267 is an equidigital number, since it uses as much as digits as its factorization.

155978267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70969.

The product of its digits is 1058400, while the sum is 50.

The square root of 155978267 is about 12489.1259502016. The cubic root of 155978267 is about 538.2962614666.

The spelling of 155978267 in words is "one hundred fifty-five million, nine hundred seventy-eight thousand, two hundred sixty-seven".