11072521 has 8 divisors (see below), whose sum is σ = 11289024. Its totient is φ = 10857840.

The previous prime is 11072507. The next prime is 11072557. The reversal of 11072521 is 12527011.

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 11072521 - 2¹⁵ = 11039753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11072221) 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, 19386 + ... + 19948.

It is an arithmetic number, because the mean of its divisors is an integer number (1411128).

Almost surely, 2^11072521 is an apocalyptic number.

It is an amenable number.

11072521 is a deficient number, since it is larger than the sum of its proper divisors (216503).

11072521 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 8 representation: 11072521 = (52172011)₈.

11072521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11072521 is about 3327.5397818809. The cubic root of 11072521 is about 222.8856821212.

Adding to 11072521 its reverse (12527011), we get a palindrome (23599532).

The spelling of 11072521 in words is "eleven million, seventy-two thousand, five hundred twenty-one".