5115502100 has 18 divisors (see below), whose sum is σ = 11100639774. Its totient is φ = 2046200800.

The previous prime is 5115502097. The next prime is 5115502103. The reversal of 5115502100 is 12055115.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5115502097) and next prime (5115502103).

It can be written as a sum of positive squares in 3 ways, for example, as 40934404 + 5074567696 = 6398^2 + 71236^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115502103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25577411 + ... + 25577610.

Almost surely, 2^5115502100 is an apocalyptic number.

5115502100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5115502100 is an abundant number, since it is smaller than the sum of its proper divisors (5985137674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5115502100 is a wasteful number, since it uses less digits than its factorization.

5115502100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51155035 (or 51155028 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 5115502100 is about 71522.7383424321. The cubic root of 5115502100 is about 1723.0428941689.

Adding to 5115502100 its reverse (12055115), we get a palindrome (5127557215).

The spelling of 5115502100 in words is "five billion, one hundred fifteen million, five hundred two thousand, one hundred".