124565561 has 8 divisors (see below), whose sum is σ = 125496000. Its totient is φ = 123639120.

The previous prime is 124565543. The next prime is 124565593. The reversal of 124565561 is 165565421.

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 124565561 - 2²⁶ = 57456697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124567561) 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, 88340 + ... + 89738.

It is an arithmetic number, because the mean of its divisors is an integer number (15687000).

Almost surely, 2^124565561 is an apocalyptic number.

It is an amenable number.

124565561 is a deficient number, since it is larger than the sum of its proper divisors (930439).

124565561 is a wasteful number, since it uses less digits than its factorization.

124565561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its digits is 36000, while the sum is 35.

The square root of 124565561 is about 11160.8942742058. The cubic root of 124565561 is about 499.4200756355.

The spelling of 124565561 in words is "one hundred twenty-four million, five hundred sixty-five thousand, five hundred sixty-one".