11493551 has 4 divisors (see below), whose sum is σ = 11655504. Its totient is φ = 11331600.

The previous prime is 11493539. The next prime is 11493557. The reversal of 11493551 is 15539411.

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

It is not a de Polignac number, because 11493551 - 2⁶ = 11493487 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 (11493557) 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, 80870 + ... + 81011.

It is an arithmetic number, because the mean of its divisors is an integer number (2913876).

Almost surely, 2^11493551 is an apocalyptic number.

11493551 is a deficient number, since it is larger than the sum of its proper divisors (161953).

11493551 is an equidigital number, since it uses as much as digits as its factorization.

11493551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161952.

The product of its digits is 2700, while the sum is 29.

The square root of 11493551 is about 3390.2140050445. The cubic root of 11493551 is about 225.6756709986.

It can be divided in two parts, 114935 and 51, that multiplied together give a palindrome (5861685).

The spelling of 11493551 in words is "eleven million, four hundred ninety-three thousand, five hundred fifty-one".