5161021051 has 2 divisors, whose sum is σ = 5161021052. Its totient is φ = 5161021050.

The previous prime is 5161021049. The next prime is 5161021067. The reversal of 5161021051 is 1501201615.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5161021051 - 2¹ = 5161021049 is a prime.

It is a super-2 number, since 2×5161021051² = 53272276577730289202, which contains 22 as substring.

Together with 5161021049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5161021951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580510525 + 2580510526.

It is an arithmetic number, because the mean of its divisors is an integer number (2580510526).

Almost surely, 2^5161021051 is an apocalyptic number.

5161021051 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161021051 is an equidigital number, since it uses as much as digits as its factorization.

5161021051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 5161021051 is about 71840.2467353781. The cubic root of 5161021051 is about 1728.1384914285.

Adding to 5161021051 its reverse (1501201615), we get a palindrome (6662222666).

The spelling of 5161021051 in words is "five billion, one hundred sixty-one million, twenty-one thousand, fifty-one".