105420553 has 36 divisors (see below), whose sum is σ = 135414016. Its totient is φ = 80294400.

The previous prime is 105420533. The next prime is 105420559. The reversal of 105420553 is 355024501.

It is not a de Polignac number, because 105420553 - 2⁹ = 105420041 is a prime.

It is a super-2 number, since 2×105420553² = 22226985989651618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105420559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2571213 + ... + 2571253.

Almost surely, 2^105420553 is an apocalyptic number.

It is an amenable number.

105420553 is a deficient number, since it is larger than the sum of its proper divisors (29993463).

105420553 is an equidigital number, since it uses as much as digits as its factorization.

105420553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 105420553 is about 10267.4511442714. The cubic root of 105420553 is about 472.3984130681.

The spelling of 105420553 in words is "one hundred five million, four hundred twenty thousand, five hundred fifty-three".