5105507721 has 8 divisors (see below), whose sum is σ = 6808401600. Its totient is φ = 3403142832.

The previous prime is 5105507683. The next prime is 5105507741. The reversal of 5105507721 is 1277055015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5105507721 - 2¹¹ = 5105505673 is a prime.

It is a super-2 number, since 2×5105507721² = 52132418178381227682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5105507741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109150 + ... + 148743.

It is an arithmetic number, because the mean of its divisors is an integer number (851050200).

Almost surely, 2^5105507721 is an apocalyptic number.

It is an amenable number.

5105507721 is a deficient number, since it is larger than the sum of its proper divisors (1702893879).

5105507721 is a wasteful number, since it uses less digits than its factorization.

5105507721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264495.

The product of its (nonzero) digits is 12250, while the sum is 33.

The square root of 5105507721 is about 71452.8356400220. The cubic root of 5105507721 is about 1721.9200346371.

The spelling of 5105507721 in words is "five billion, one hundred five million, five hundred seven thousand, seven hundred twenty-one".