11321745 has 32 divisors (see below), whose sum is σ = 19854720. Its totient is φ = 5483520.

The previous prime is 11321729. The next prime is 11321747. The reversal of 11321745 is 54712311.

11321745 = 413² + 414² + ... + 470².

It is not a de Polignac number, because 11321745 - 2⁴ = 11321729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11321747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6630 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (620460).

Almost surely, 2^11321745 is an apocalyptic number.

11321745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11321745 is a deficient number, since it is larger than the sum of its proper divisors (8532975).

11321745 is a wasteful number, since it uses less digits than its factorization.

11321745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its digits is 840, while the sum is 24.

The square root of 11321745 is about 3364.7800819667. The cubic root of 11321745 is about 224.5455518733.

The spelling of 11321745 in words is "eleven million, three hundred twenty-one thousand, seven hundred forty-five".