9900051 has 32 divisors (see below), whose sum is σ = 15974400. Its totient is φ = 5331744.

The previous prime is 9900047. The next prime is 9900091. The reversal of 9900051 is 1500099.

It is a happy number.

It is not a de Polignac number, because 9900051 - 2² = 9900047 is a prime.

It is a super-2 number, since 2×9900051² = 196022019605202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9899994 and 9900030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49650 + ... + 49848.

It is an arithmetic number, because the mean of its divisors is an integer number (499200).

Almost surely, 2^9900051 is an apocalyptic number.

9900051 is a deficient number, since it is larger than the sum of its proper divisors (6074349).

9900051 is a wasteful number, since it uses less digits than its factorization.

9900051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 9900051 is about 3146.4346489320. The cubic root of 9900051 is about 214.7232856174.

The spelling of 9900051 in words is "nine million, nine hundred thousand, fifty-one".