11572011 has 32 divisors (see below), whose sum is σ = 19123200. Its totient is φ = 6855840.

The previous prime is 11571983. The next prime is 11572037. The reversal of 11572011 is 11027511.

It is a happy number.

It is not a de Polignac number, because 11572011 - 2¹⁷ = 11440939 is a prime.

It is a super-2 number, since 2×11572011² = 267822877168242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11572051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13545 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (597600).

Almost surely, 2^11572011 is an apocalyptic number.

11572011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11572011 is a deficient number, since it is larger than the sum of its proper divisors (7551189).

11572011 is a wasteful number, since it uses less digits than its factorization.

11572011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11572011 is about 3401.7658649590. The cubic root of 11572011 is about 226.1880271439.

Adding to 11572011 its reverse (11027511), we get a palindrome (22599522).

The spelling of 11572011 in words is "eleven million, five hundred seventy-two thousand, eleven".