2555142581 has 2 divisors, whose sum is σ = 2555142582. Its totient is φ = 2555142580.

The previous prime is 2555142521. The next prime is 2555142589. The reversal of 2555142581 is 1852415552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1403626225 + 1151516356 = 37465^2 + 33934^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555142581 - 2¹⁰ = 2555141557 is a prime.

It is a super-2 number, since 2×2555142581² = 13057507218478683122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555142589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277571290 + 1277571291.

It is an arithmetic number, because the mean of its divisors is an integer number (1277571291).

Almost surely, 2^2555142581 is an apocalyptic number.

It is an amenable number.

2555142581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555142581 is an equidigital number, since it uses as much as digits as its factorization.

2555142581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80000, while the sum is 38.

The square root of 2555142581 is about 50548.4181849442. The cubic root of 2555142581 is about 1367.1149939465.

The spelling of 2555142581 in words is "two billion, five hundred fifty-five million, one hundred forty-two thousand, five hundred eighty-one".