123567155 has 16 divisors (see below), whose sum is σ = 156479040. Its totient is φ = 93485568.

The previous prime is 123567107. The next prime is 123567167. The reversal of 123567155 is 551765321.

It is a cyclic number.

It is not a de Polignac number, because 123567155 - 2¹² = 123563059 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 4199 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (9779940).

Almost surely, 2^123567155 is an apocalyptic number.

123567155 is a deficient number, since it is larger than the sum of its proper divisors (32911885).

123567155 is a wasteful number, since it uses less digits than its factorization.

123567155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12190.

The product of its digits is 31500, while the sum is 35.

The square root of 123567155 is about 11116.0764211119. The cubic root of 123567155 is about 498.0821934409.

The spelling of 123567155 in words is "one hundred twenty-three million, five hundred sixty-seven thousand, one hundred fifty-five".