2050126561 has 4 divisors (see below), whose sum is σ = 2343001792. Its totient is φ = 1757251332.

The previous prime is 2050126553. The next prime is 2050126571. The reversal of 2050126561 is 1656210502.

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 2050126561 - 2³ = 2050126553 is a prime.

It is a super-2 number, since 2×2050126561² = 8406037832235373442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2050126571) 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, 146437605 + ... + 146437618.

It is an arithmetic number, because the mean of its divisors is an integer number (585750448).

Almost surely, 2^2050126561 is an apocalyptic number.

It is an amenable number.

2050126561 is a deficient number, since it is larger than the sum of its proper divisors (292875231).

2050126561 is an equidigital number, since it uses as much as digits as its factorization.

2050126561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292875230.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2050126561 is about 45278.3233015535. The cubic root of 2050126561 is about 1270.3602344708.

The spelling of 2050126561 in words is "two billion, fifty million, one hundred twenty-six thousand, five hundred sixty-one".