245180155 has 16 divisors (see below), whose sum is σ = 321283584. Its totient is φ = 178134880.

The previous prime is 245180141. The next prime is 245180189. The reversal of 245180155 is 551081542.

It is not a de Polignac number, because 245180155 - 2¹¹ = 245178107 is a prime.

It is a super-2 number, since 2×245180155² = 120226616811648050, which contains 22 as substring.

It is a Duffinian number.

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, 82302 + ... + 85228.

It is an arithmetic number, because the mean of its divisors is an integer number (20080224).

Almost surely, 2^245180155 is an apocalyptic number.

245180155 is a deficient number, since it is larger than the sum of its proper divisors (76103429).

245180155 is a wasteful number, since it uses less digits than its factorization.

245180155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 245180155 is about 15658.2296253440. The cubic root of 245180155 is about 625.8858095532.

The spelling of 245180155 in words is "two hundred forty-five million, one hundred eighty thousand, one hundred fifty-five".