99955650 has 48 divisors (see below), whose sum is σ = 253671264. Its totient is φ = 26033280.

The previous prime is 99955649. The next prime is 99955651. The reversal of 99955650 is 5655999.

It is an interprime number because it is at equal distance from previous prime (99955649) and next prime (99955651).

It is a super-2 number, since 2×99955650² = 19982263933845000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99955650.

It is not an unprimeable number, because it can be changed into a prime (99955651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1299 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (5284818).

Almost surely, 2^99955650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99955650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126835632).

99955650 is an abundant number, since it is smaller than the sum of its proper divisors (153715614).

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

99955650 is a wasteful number, since it uses less digits than its factorization.

99955650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15555 (or 15550 counting only the distinct ones).

The product of its (nonzero) digits is 546750, while the sum is 48.

The square root of 99955650 is about 9997.7822540802. The cubic root of 99955650 is about 464.0902550598.

The spelling of 99955650 in words is "ninety-nine million, nine hundred fifty-five thousand, six hundred fifty".