11528101 has 4 divisors (see below), whose sum is σ = 12414892. Its totient is φ = 10641312.

The previous prime is 11528059. The next prime is 11528107. The reversal of 11528101 is 10182511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 3960100 = 2751^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 11528101 - 2⁷ = 11527973 is a prime.

It is a super-2 number, since 2×11528101² = 265794225332402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528107) 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, 443376 + ... + 443401.

It is an arithmetic number, because the mean of its divisors is an integer number (3103723).

Almost surely, 2^11528101 is an apocalyptic number.

It is an amenable number.

11528101 is a deficient number, since it is larger than the sum of its proper divisors (886791).

11528101 is an equidigital number, since it uses as much as digits as its factorization.

11528101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886790.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 11528101 is about 3395.3057299748. The cubic root of 11528101 is about 225.9015743386.

The spelling of 11528101 in words is "eleven million, five hundred twenty-eight thousand, one hundred one".