2557530279 has 24 divisors (see below), whose sum is σ = 3751238400. Its totient is φ = 1678818960.

The previous prime is 2557530277. The next prime is 2557530299. The reversal of 2557530279 is 9720357552.

2557530279 is a `hidden beast` number, since 2 + 5 + 575 + 3 + 0 + 2 + 79 = 666.

It is not a de Polignac number, because 2557530279 - 2¹ = 2557530277 is a prime.

It is a super-2 number, since 2×2557530279² = 13081922256003635682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557530277) 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, 264724 + ... + 274214.

It is an arithmetic number, because the mean of its divisors is an integer number (156301600).

Almost surely, 2^2557530279 is an apocalyptic number.

2557530279 is a deficient number, since it is larger than the sum of its proper divisors (1193708121).

2557530279 is a wasteful number, since it uses less digits than its factorization.

2557530279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955 (or 9952 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The square root of 2557530279 is about 50572.0305999275. The cubic root of 2557530279 is about 1367.5407029340.

It can be divided in two parts, 255753027 and 9, that added together give a triangular number (255753036 = T₂₂₆₁₆).

The spelling of 2557530279 in words is "two billion, five hundred fifty-seven million, five hundred thirty thousand, two hundred seventy-nine".