105621332 has 12 divisors (see below), whose sum is σ = 186078900. Its totient is φ = 52455936.

The previous prime is 105621331. The next prime is 105621343. The reversal of 105621332 is 233126501.

It can be written as a sum of positive squares in 2 ways, for example, as 31764496 + 73856836 = 5636^2 + 8594^2 .

It is a super-2 number, since 2×105621332² = 22311731546908448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105621298 and 105621307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105621331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88013 + ... + 89204.

It is an arithmetic number, because the mean of its divisors is an integer number (15506575).

Almost surely, 2^105621332 is an apocalyptic number.

It is an amenable number.

105621332 is a deficient number, since it is larger than the sum of its proper divisors (80457568).

105621332 is a wasteful number, since it uses less digits than its factorization.

105621332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177370 (or 177368 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 105621332 is about 10277.2239442371. The cubic root of 105621332 is about 472.6981254353.

Adding to 105621332 its reverse (233126501), we get a palindrome (338747833).

The spelling of 105621332 in words is "one hundred five million, six hundred twenty-one thousand, three hundred thirty-two".