2155249296 has 200 divisors, whose sum is σ = 6533581824. Its totient is φ = 685186560.

The previous prime is 2155249277. The next prime is 2155249303. The reversal of 2155249296 is 6929425512.

2155249296 is a `hidden beast` number, since 2 + 1 + 552 + 4 + 9 + 2 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2496961 + ... + 2497823.

Almost surely, 2^2155249296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155249296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3266790912).

2155249296 is an abundant number, since it is smaller than the sum of its proper divisors (4378332528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155249296 is a wasteful number, since it uses less digits than its factorization.

2155249296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 956 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 2155249296 is about 46424.6625835880. The cubic root of 2155249296 is about 1291.7124256524.

The spelling of 2155249296 in words is "two billion, one hundred fifty-five million, two hundred forty-nine thousand, two hundred ninety-six".