11705553 has 14 divisors (see below), whose sum is σ = 17551394. Its totient is φ = 7803216.

The previous prime is 11705549. The next prime is 11705567. The reversal of 11705553 is 35550711.

11705553 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9809424 + 1896129 = 3132^2 + 1377^2 .

It is not a de Polignac number, because 11705553 - 2² = 11705549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11705453) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7300 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (1253671).

Almost surely, 2^11705553 is an apocalyptic number.

It is an amenable number.

11705553 is a deficient number, since it is larger than the sum of its proper divisors (5845841).

11705553 is an frugal number, since it uses more digits than its factorization.

11705553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075 (or 16060 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 11705553 is about 3421.3378962038. The cubic root of 11705553 is about 227.0547779335.

The spelling of 11705553 in words is "eleven million, seven hundred five thousand, five hundred fifty-three".