2051329517 has 4 divisors (see below), whose sum is σ = 2051421276. Its totient is φ = 2051237760.

The previous prime is 2051329487. The next prime is 2051329537. The reversal of 2051329517 is 7159231502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 945501001 + 1105828516 = 30749^2 + 33254^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051329517 - 2⁶ = 2051329453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051329537) 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, 11963 + ... + 65159.

It is an arithmetic number, because the mean of its divisors is an integer number (512855319).

Almost surely, 2^2051329517 is an apocalyptic number.

It is an amenable number.

2051329517 is a deficient number, since it is larger than the sum of its proper divisors (91759).

2051329517 is an equidigital number, since it uses as much as digits as its factorization.

2051329517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91758.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 2051329517 is about 45291.6053700904. The cubic root of 2051329517 is about 1270.6086563152.

The spelling of 2051329517 in words is "two billion, fifty-one million, three hundred twenty-nine thousand, five hundred seventeen".