10115550 has 96 divisors (see below), whose sum is σ = 28569600. Its totient is φ = 2630880.

The previous prime is 10115533. The next prime is 10115557. The reversal of 10115550 is 5551101.

10115550 is a `hidden beast` number, since 1 + 0 + 115 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10115557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79587 + ... + 79713.

It is an arithmetic number, because the mean of its divisors is an integer number (297600).

Almost surely, 2^10115550 is an apocalyptic number.

10115550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10115550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14284800).

10115550 is an abundant number, since it is smaller than the sum of its proper divisors (18454050).

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

10115550 is a wasteful number, since it uses less digits than its factorization.

10115550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 10115550 is about 3180.4952444549. The cubic root of 10115550 is about 216.2701096160.

Adding to 10115550 its reverse (5551101), we get a palindrome (15666651).

It can be divided in two parts, 1011 and 5550, that added together give a 8-th power (6561 = 3⁸).

The spelling of 10115550 in words is "ten million, one hundred fifteen thousand, five hundred fifty".