523247121 has 10 divisors (see below), whose sum is σ = 781640882. Its totient is φ = 348831360.

The previous prime is 523247113. The next prime is 523247147. The reversal of 523247121 is 121742325.

It can be written as a sum of positive squares in only one way, i.e., 468116496 + 55130625 = 21636^2 + 7425^2 .

It is not a de Polignac number, because 523247121 - 2³ = 523247113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523247161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3229840 + ... + 3230001.

Almost surely, 2^523247121 is an apocalyptic number.

It is an amenable number.

523247121 is a deficient number, since it is larger than the sum of its proper divisors (258393761).

523247121 is an equidigital number, since it uses as much as digits as its factorization.

523247121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6459853 (or 6459844 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 523247121 is about 22874.5955374079. The cubic root of 523247121 is about 805.8154980611.

Adding to 523247121 its reverse (121742325), we get a palindrome (644989446).

The spelling of 523247121 in words is "five hundred twenty-three million, two hundred forty-seven thousand, one hundred twenty-one".