155163245 has 4 divisors (see below), whose sum is σ = 186195900. Its totient is φ = 124130592.

The previous prime is 155163241. The next prime is 155163247. The reversal of 155163245 is 542361551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542361551 = 23 ⋅23580937.

It can be written as a sum of positive squares in 2 ways, for example, as 103510276 + 51652969 = 10174^2 + 7187^2 .

It is a cyclic number.

It is not a de Polignac number, because 155163245 - 2² = 155163241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155163241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15516320 + ... + 15516329.

It is an arithmetic number, because the mean of its divisors is an integer number (46548975).

Almost surely, 2^155163245 is an apocalyptic number.

It is an amenable number.

155163245 is a deficient number, since it is larger than the sum of its proper divisors (31032655).

155163245 is an equidigital number, since it uses as much as digits as its factorization.

155163245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31032654.

The product of its digits is 18000, while the sum is 32.

The square root of 155163245 is about 12456.4539496600. The cubic root of 155163245 is about 537.3570501412.

The spelling of 155163245 in words is "one hundred fifty-five million, one hundred sixty-three thousand, two hundred forty-five".