2558042161 has 4 divisors (see below), whose sum is σ = 2559269952. Its totient is φ = 2556814372.

The previous prime is 2558042147. The next prime is 2558042167. The reversal of 2558042161 is 1612408552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2558042161 - 2⁷ = 2558042033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2558042167) 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, 610765 + ... + 614938.

It is an arithmetic number, because the mean of its divisors is an integer number (639817488).

Almost surely, 2^2558042161 is an apocalyptic number.

It is an amenable number.

2558042161 is a deficient number, since it is larger than the sum of its proper divisors (1227791).

2558042161 is a wasteful number, since it uses less digits than its factorization.

2558042161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227790.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 2558042161 is about 50577.0912666990. The cubic root of 2558042161 is about 1367.6319332352.

The spelling of 2558042161 in words is "two billion, five hundred fifty-eight million, forty-two thousand, one hundred sixty-one".