113201550 has 288 divisors, whose sum is σ = 396474624. Its totient is φ = 23522400.

The previous prime is 113201531. The next prime is 113201567. The reversal of 113201550 is 55102311.

113201550 is a `hidden beast` number, since 113 + 2 + 0 + 1 + 550 = 666.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10291045 + ... + 10291055.

It is an arithmetic number, because the mean of its divisors is an integer number (1376648).

Almost surely, 2^113201550 is an apocalyptic number.

113201550 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 113201550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198237312).

113201550 is an abundant number, since it is smaller than the sum of its proper divisors (283273074).

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

113201550 is an equidigital number, since it uses as much as digits as its factorization.

113201550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 113201550 is about 10639.6217038013. The cubic root of 113201550 is about 483.7460789298.

Adding to 113201550 its reverse (55102311), we get a palindrome (168303861).

The spelling of 113201550 in words is "one hundred thirteen million, two hundred one thousand, five hundred fifty".