2515455553 has 4 divisors (see below), whose sum is σ = 2708952148. Its totient is φ = 2321958960.

The previous prime is 2515455539. The next prime is 2515455577. The reversal of 2515455553 is 3555545152.

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 1489342464 + 1026113089 = 38592^2 + 32033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2515455553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2515455583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96748278 + ... + 96748303.

It is an arithmetic number, because the mean of its divisors is an integer number (677238037).

Almost surely, 2^2515455553 is an apocalyptic number.

It is an amenable number.

2515455553 is a deficient number, since it is larger than the sum of its proper divisors (193496595).

2515455553 is a wasteful number, since it uses less digits than its factorization.

2515455553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193496594.

The product of its digits is 375000, while the sum is 40.

The square root of 2515455553 is about 50154.3173914270. The cubic root of 2515455553 is about 1359.9999194420. Note that the first 4 decimals are identical.

The spelling of 2515455553 in words is "two billion, five hundred fifteen million, four hundred fifty-five thousand, five hundred fifty-three".