10172102557 has 4 divisors (see below), whose sum is σ = 10172338236. Its totient is φ = 10171866880.

The previous prime is 10172102533. The next prime is 10172102579. The reversal of 10172102557 is 75520127101.

10172102557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 390694756 + 9781407801 = 19766^2 + 98901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10172102557 is a prime.

It is a super-3 number, since 3×10172102557³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10172102527) 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, 32494 + ... + 146287.

It is an arithmetic number, because the mean of its divisors is an integer number (2543084559).

Almost surely, 2^10172102557 is an apocalyptic number.

It is an amenable number.

10172102557 is a deficient number, since it is larger than the sum of its proper divisors (235679).

10172102557 is an equidigital number, since it uses as much as digits as its factorization.

10172102557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235678.

The product of its (nonzero) digits is 4900, while the sum is 31.

Adding to 10172102557 its reverse (75520127101), we get a palindrome (85692229658).

The spelling of 10172102557 in words is "ten billion, one hundred seventy-two million, one hundred two thousand, five hundred fifty-seven".