5172155550 has 36 divisors (see below), whose sum is σ = 13895859120. Its totient is φ = 1379241360.

The previous prime is 5172155543. The next prime is 5172155557. The reversal of 5172155550 is 555512715.

5172155550 is a `hidden beast` number, since 51 + 7 + 2 + 1 + 55 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (5172155543) and next prime (5172155557).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5172155557) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5746390 + ... + 5747289.

Almost surely, 2^5172155550 is an apocalyptic number.

5172155550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5172155550 is an abundant number, since it is smaller than the sum of its proper divisors (8723703570).

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

5172155550 is a wasteful number, since it uses less digits than its factorization.

5172155550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11493697 (or 11493689 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 36.

The square root of 5172155550 is about 71917.6998380788. The cubic root of 5172155550 is about 1729.3803732838.

The spelling of 5172155550 in words is "five billion, one hundred seventy-two million, one hundred fifty-five thousand, five hundred fifty".