2123601577 has 2 divisors, whose sum is σ = 2123601578. Its totient is φ = 2123601576.

The previous prime is 2123601541. The next prime is 2123601593. The reversal of 2123601577 is 7751063212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1481942016 + 641659561 = 38496^2 + 25331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123601577 - 2²⁷ = 1989383849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123601527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061800788 + 1061800789.

It is an arithmetic number, because the mean of its divisors is an integer number (1061800789).

Almost surely, 2^2123601577 is an apocalyptic number.

It is an amenable number.

2123601577 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123601577 is an equidigital number, since it uses as much as digits as its factorization.

2123601577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2123601577 is about 46082.5517631131. The cubic root of 2123601577 is about 1285.3587146728.

Adding to 2123601577 its reverse (7751063212), we get a palindrome (9874664789).

The spelling of 2123601577 in words is "two billion, one hundred twenty-three million, six hundred one thousand, five hundred seventy-seven".