1106553621 has 8 divisors (see below), whose sum is σ = 1539552960. Its totient is φ = 705628352.

The previous prime is 1106553619. The next prime is 1106553641. The reversal of 1106553621 is 1263556011.

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

It is a cyclic number.

It is not a de Polignac number, because 1106553621 - 2¹ = 1106553619 is a prime.

It is a super-2 number, since 2×1106553621² = 2448921832296423282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106553611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8018436 + ... + 8018573.

It is an arithmetic number, because the mean of its divisors is an integer number (192444120).

Almost surely, 2^1106553621 is an apocalyptic number.

It is an amenable number.

1106553621 is a deficient number, since it is larger than the sum of its proper divisors (432999339).

1106553621 is a wasteful number, since it uses less digits than its factorization.

1106553621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16037035.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1106553621 is about 33264.9007363617. The cubic root of 1106553621 is about 1034.3261099019.

The spelling of 1106553621 in words is "one billion, one hundred six million, five hundred fifty-three thousand, six hundred twenty-one".