11051553 has 16 divisors (see below), whose sum is σ = 15124032. Its totient is φ = 7176000.

The previous prime is 11051549. The next prime is 11051561. The reversal of 11051553 is 35515011.

It is not a de Polignac number, because 11051553 - 2² = 11051549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11051153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23743 + ... + 24203.

It is an arithmetic number, because the mean of its divisors is an integer number (945252).

Almost surely, 2^11051553 is an apocalyptic number.

It is an amenable number.

11051553 is a deficient number, since it is larger than the sum of its proper divisors (4072479).

11051553 is a wasteful number, since it uses less digits than its factorization.

11051553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 11051553 is about 3324.3876127792. The cubic root of 11051553 is about 222.7449005674.

Adding to 11051553 its reverse (35515011), we get a palindrome (46566564).

The spelling of 11051553 in words is "eleven million, fifty-one thousand, five hundred fifty-three".