2575571481 has 48 divisors (see below), whose sum is σ = 4422832128. Its totient is φ = 1413266400.

The previous prime is 2575571477. The next prime is 2575571501. The reversal of 2575571481 is 1841755752.

2575571481 is a `hidden beast` number, since 2 + 5 + 7 + 557 + 14 + 81 = 666.

It is not a de Polignac number, because 2575571481 - 2² = 2575571477 is a prime.

It is a super-2 number, since 2×2575571481² = 13267136907481066722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2575571431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250810 + ... + 260876.

It is an arithmetic number, because the mean of its divisors is an integer number (92142336).

Almost surely, 2^2575571481 is an apocalyptic number.

2575571481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2575571481 is a deficient number, since it is larger than the sum of its proper divisors (1847260647).

2575571481 is a wasteful number, since it uses less digits than its factorization.

2575571481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242 (or 10239 counting only the distinct ones).

The product of its digits is 392000, while the sum is 45.

The square root of 2575571481 is about 50750.0884826815. The cubic root of 2575571481 is about 1370.7487836677.

It can be divided in two parts, 2575 and 571481, that added together give a triangular number (574056 = T₁₀₇₁).

The spelling of 2575571481 in words is "two billion, five hundred seventy-five million, five hundred seventy-one thousand, four hundred eighty-one".