2552730921 has 24 divisors (see below), whose sum is σ = 4179913920. Its totient is φ = 1488230496.

The previous prime is 2552730913. The next prime is 2552730937. The reversal of 2552730921 is 1290372552.

It is not a de Polignac number, because 2552730921 - 2³ = 2552730913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2552730911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571941 + ... + 576386.

It is an arithmetic number, because the mean of its divisors is an integer number (174163080).

Almost surely, 2^2552730921 is an apocalyptic number.

It is an amenable number.

2552730921 is a deficient number, since it is larger than the sum of its proper divisors (1627182999).

2552730921 is a wasteful number, since it uses less digits than its factorization.

2552730921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148365 (or 1148362 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 2552730921 is about 50524.5576032092. The cubic root of 2552730921 is about 1366.6847434122.

The spelling of 2552730921 in words is "two billion, five hundred fifty-two million, seven hundred thirty thousand, nine hundred twenty-one".