2897721054 has 56 divisors (see below), whose sum is σ = 6558918120. Its totient is φ = 959678928.

The previous prime is 2897721053. The next prime is 2897721059. The reversal of 2897721054 is 4501277982.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897721053) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 222577 + ... + 235235.

Almost surely, 2^2897721054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2897721054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3279459060).

2897721054 is an abundant number, since it is smaller than the sum of its proper divisors (3661197066).

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

2897721054 is a wasteful number, since it uses less digits than its factorization.

2897721054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836 (or 12821 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 2897721054 is about 53830.4844302928. The cubic root of 2897721054 is about 1425.6695003613.

The spelling of 2897721054 in words is "two billion, eight hundred ninety-seven million, seven hundred twenty-one thousand, fifty-four".