11973575 has 6 divisors (see below), whose sum is σ = 14847264. Its totient is φ = 9578840.

The previous prime is 11973571. The next prime is 11973581. The reversal of 11973575 is 57537911.

It is not a de Polignac number, because 11973575 - 2² = 11973571 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 (11973571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239447 + ... + 239496.

It is an arithmetic number, because the mean of its divisors is an integer number (2474544).

Almost surely, 2^11973575 is an apocalyptic number.

11973575 is a deficient number, since it is larger than the sum of its proper divisors (2873689).

11973575 is an equidigital number, since it uses as much as digits as its factorization.

11973575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478953 (or 478948 counting only the distinct ones).

The product of its digits is 33075, while the sum is 38.

The square root of 11973575 is about 3460.2853928542. The cubic root of 11973575 is about 228.7746745955.

It can be divided in two parts, 1197 and 3575, that multiplied together give a triangular number (4279275 = T₂₉₂₅).

The spelling of 11973575 in words is "eleven million, nine hundred seventy-three thousand, five hundred seventy-five".