5120252661 has 8 divisors (see below), whose sum is σ = 7228592064. Its totient is φ = 3212707520.

The previous prime is 5120252629. The next prime is 5120252699. The reversal of 5120252661 is 1662520215.

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

It is a cyclic number.

It is not a de Polignac number, because 5120252661 - 2⁵ = 5120252629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5120252861) 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, 50198505 + ... + 50198606.

It is an arithmetic number, because the mean of its divisors is an integer number (903574008).

Almost surely, 2^5120252661 is an apocalyptic number.

5120252661 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5120252661 is a deficient number, since it is larger than the sum of its proper divisors (2108339403).

5120252661 is a wasteful number, since it uses less digits than its factorization.

5120252661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100397131.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 5120252661 is about 71555.9407806228. The cubic root of 5120252661 is about 1723.5761026854.

Adding to 5120252661 its reverse (1662520215), we get a palindrome (6782772876).

The spelling of 5120252661 in words is "five billion, one hundred twenty million, two hundred fifty-two thousand, six hundred sixty-one".