2730729553 has 4 divisors (see below), whose sum is σ = 2731815268. Its totient is φ = 2729643840.

The previous prime is 2730729503. The next prime is 2730729593. The reversal of 2730729553 is 3559270372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 779917329 + 1950812224 = 27927^2 + 44168^2 .

It is a cyclic number.

It is not a de Polignac number, because 2730729553 - 2²⁵ = 2697175121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2730729503) 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, 539076 + ... + 544117.

It is an arithmetic number, because the mean of its divisors is an integer number (682953817).

Almost surely, 2^2730729553 is an apocalyptic number.

It is an amenable number.

2730729553 is a deficient number, since it is larger than the sum of its proper divisors (1085715).

2730729553 is a wasteful number, since it uses less digits than its factorization.

2730729553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085714.

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 2730729553 is about 52256.3828924276. The cubic root of 2730729553 is about 1397.7394732364.

The spelling of 2730729553 in words is "two billion, seven hundred thirty million, seven hundred twenty-nine thousand, five hundred fifty-three".