245120155 has 16 divisors (see below), whose sum is σ = 338030784. Its totient is φ = 167149440.

The previous prime is 245120147. The next prime is 245120179. The reversal of 245120155 is 551021542.

It is not a de Polignac number, because 245120155 - 2³ = 245120147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13012 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (21126924).

Almost surely, 2^245120155 is an apocalyptic number.

245120155 is a deficient number, since it is larger than the sum of its proper divisors (92910629).

245120155 is a wasteful number, since it uses less digits than its factorization.

245120155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 245120155 is about 15656.3135827052. The cubic root of 245120155 is about 625.8347502110.

Adding to 245120155 its reverse (551021542), we get a palindrome (796141697).

The spelling of 245120155 in words is "two hundred forty-five million, one hundred twenty thousand, one hundred fifty-five".