11372581 has 8 divisors (see below), whose sum is σ = 12641184. Its totient is φ = 10143120.

The previous prime is 11372561. The next prime is 11372591. The reversal of 11372581 is 18527311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11372581 - 2⁷ = 11372453 is a prime.

It is a super-2 number, since 2×11372581² = 258671197203122, 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 (11372521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9171 + ... + 10336.

It is an arithmetic number, because the mean of its divisors is an integer number (1580148).

Almost surely, 2^11372581 is an apocalyptic number.

11372581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11372581 is a deficient number, since it is larger than the sum of its proper divisors (1268603).

11372581 is a wasteful number, since it uses less digits than its factorization.

11372581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19571.

The product of its digits is 1680, while the sum is 28.

The square root of 11372581 is about 3372.3257553208. The cubic root of 11372581 is about 224.8811289792.

Adding to 11372581 its reverse (18527311), we get a palindrome (29899892).

The spelling of 11372581 in words is "eleven million, three hundred seventy-two thousand, five hundred eighty-one".