2897155972 has 12 divisors (see below), whose sum is σ = 5071239936. Its totient is φ = 1448230280.

The previous prime is 2897155927. The next prime is 2897155979. The reversal of 2897155972 is 2795517982.

It is a happy number.

2897155972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2897155979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67708 + ... + 101875.

It is an arithmetic number, because the mean of its divisors is an integer number (422603328).

Almost surely, 2^2897155972 is an apocalyptic number.

It is an amenable number.

2897155972 is a deficient number, since it is larger than the sum of its proper divisors (2174083964).

2897155972 is a wasteful number, since it uses less digits than its factorization.

2897155972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173858 (or 173856 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 55.

The square root of 2897155972 is about 53825.2354569862. The cubic root of 2897155972 is about 1425.5768214904.

The spelling of 2897155972 in words is "two billion, eight hundred ninety-seven million, one hundred fifty-five thousand, nine hundred seventy-two".