105521404 has 24 divisors (see below), whose sum is σ = 186617088. Its totient is φ = 52206000.

The previous prime is 105521393. The next prime is 105521443. The reversal of 105521404 is 404125501.

It is a super-2 number, since 2×105521404² = 22269533404262432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227677 + ... + 228139.

It is an arithmetic number, because the mean of its divisors is an integer number (7775712).

Almost surely, 2^105521404 is an apocalyptic number.

It is an amenable number.

105521404 is a deficient number, since it is larger than the sum of its proper divisors (81095684).

105521404 is a wasteful number, since it uses less digits than its factorization.

105521404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 105521404 is about 10272.3611696630. The cubic root of 105521404 is about 472.5490056765.

Adding to 105521404 its reverse (404125501), we get a palindrome (509646905).

The spelling of 105521404 in words is "one hundred five million, five hundred twenty-one thousand, four hundred four".