11551055 has 4 divisors (see below), whose sum is σ = 13861272. Its totient is φ = 9240840.

The previous prime is 11551013. The next prime is 11551081. The reversal of 11551055 is 55015511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55015511 = 127 ⋅433193.

It is not a de Polignac number, because 11551055 - 2¹⁴ = 11534671 is a prime.

It is a super-2 number, since 2×11551055² = 266853743226050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11551055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155101 + ... + 1155110.

It is an arithmetic number, because the mean of its divisors is an integer number (3465318).

Almost surely, 2^11551055 is an apocalyptic number.

11551055 is a deficient number, since it is larger than the sum of its proper divisors (2310217).

11551055 is an equidigital number, since it uses as much as digits as its factorization.

11551055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310216.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 11551055 is about 3398.6843042566. The cubic root of 11551055 is about 226.0514084112.

Adding to 11551055 its reverse (55015511), we get a palindrome (66566566).

The spelling of 11551055 in words is "eleven million, five hundred fifty-one thousand, fifty-five".