2155435245 has 16 divisors (see below), whose sum is σ = 3831885120. Its totient is φ = 1149565392.

The previous prime is 2155435223. The next prime is 2155435277. The reversal of 2155435245 is 5425345512.

2155435245 is a `hidden beast` number, since 21 + 5 + 543 + 52 + 45 = 666.

It is not a de Polignac number, because 2155435245 - 2⁵ = 2155435213 is a prime.

It is a congruent 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, 7982959 + ... + 7983228.

It is an arithmetic number, because the mean of its divisors is an integer number (239492820).

Almost surely, 2^2155435245 is an apocalyptic number.

It is an amenable number.

2155435245 is a deficient number, since it is larger than the sum of its proper divisors (1676449875).

2155435245 is a wasteful number, since it uses less digits than its factorization.

2155435245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15966201 (or 15966195 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 2155435245 is about 46426.6652366934. The cubic root of 2155435245 is about 1291.7495730529.

The spelling of 2155435245 in words is "two billion, one hundred fifty-five million, four hundred thirty-five thousand, two hundred forty-five".