5157720500 has 48 divisors (see below), whose sum is σ = 11282426064. Its totient is φ = 2059798400.

The previous prime is 5157720497. The next prime is 5157720523. The reversal of 5157720500 is 50277515.

It can be written as a sum of positive squares in 8 ways, for example, as 1779321124 + 3378399376 = 42182^2 + 58124^2 .

It is a super-2 number, since 2×5157720500² = 53204161512240500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318602 + ... + 334398.

It is an arithmetic number, because the mean of its divisors is an integer number (235050543).

Almost surely, 2^5157720500 is an apocalyptic number.

5157720500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5157720500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5641213032).

5157720500 is an abundant number, since it is smaller than the sum of its proper divisors (6124705564).

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

5157720500 is a wasteful number, since it uses less digits than its factorization.

5157720500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469 (or 16457 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 5157720500 is about 71817.2715995254. The cubic root of 5157720500 is about 1727.7700226383.

The spelling of 5157720500 in words is "five billion, one hundred fifty-seven million, seven hundred twenty thousand, five hundred".