105553531 has 6 divisors (see below), whose sum is σ = 111156140. Its totient is φ = 99955656.

The previous prime is 105553517. The next prime is 105553549. The reversal of 105553531 is 135355501.

It is not a de Polignac number, because 105553531 - 2¹¹ = 105551483 is a prime.

It is a super-2 number, since 2×105553531² = 22283095813135922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105553531.

It is not an unprimeable number, because it can be changed into a prime (105553571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43605 + ... + 45961.

Almost surely, 2^105553531 is an apocalyptic number.

105553531 is a deficient number, since it is larger than the sum of its proper divisors (5602609).

105553531 is an frugal number, since it uses more digits than its factorization.

105553531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 105553531 is about 10273.9248099254. The cubic root of 105553531 is about 472.5969581640.

The spelling of 105553531 in words is "one hundred five million, five hundred fifty-three thousand, five hundred thirty-one".