11253551 has 4 divisors (see below), whose sum is σ = 11316600. Its totient is φ = 11190504.

The previous prime is 11253503. The next prime is 11253553. The reversal of 11253551 is 15535211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11253551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253553) 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, 31256 + ... + 31613.

It is an arithmetic number, because the mean of its divisors is an integer number (2829150).

Almost surely, 2^11253551 is an apocalyptic number.

11253551 is a deficient number, since it is larger than the sum of its proper divisors (63049).

11253551 is an equidigital number, since it uses as much as digits as its factorization.

11253551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63048.

The product of its digits is 750, while the sum is 23.

The square root of 11253551 is about 3354.6312763104. The cubic root of 11253551 is about 224.0938103563.

Adding to 11253551 its reverse (15535211), we get a palindrome (26788762).

The spelling of 11253551 in words is "eleven million, two hundred fifty-three thousand, five hundred fifty-one".