105553421 has 8 divisors (see below), whose sum is σ = 106681344. Its totient is φ = 104431680.

The previous prime is 105553397. The next prime is 105553423. The reversal of 105553421 is 124355501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105553421 is a prime.

It is a super-2 number, since 2×105553421² = 22283049369606482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105553423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37940 + ... + 40626.

It is an arithmetic number, because the mean of its divisors is an integer number (13335168).

Almost surely, 2^105553421 is an apocalyptic number.

It is an amenable number.

105553421 is a deficient number, since it is larger than the sum of its proper divisors (1127923).

105553421 is a wasteful number, since it uses less digits than its factorization.

105553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 105553421 is about 10273.9194565657. The cubic root of 105553421 is about 472.5967939956.

The spelling of 105553421 in words is "one hundred five million, five hundred fifty-three thousand, four hundred twenty-one".