53521117 has 16 divisors (see below), whose sum is σ = 61432560. Its totient is φ = 46465536.

The previous prime is 53521103. The next prime is 53521133. The reversal of 53521117 is 71112535.

It can be written as a sum of positive squares in 8 ways, for example, as 19660356 + 33860761 = 4434^2 + 5819^2 .

It is not a de Polignac number, because 53521117 - 2⁷ = 53520989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53521091 and 53521100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36633 + ... + 38065.

It is an arithmetic number, because the mean of its divisors is an integer number (3839535).

Almost surely, 2^53521117 is an apocalyptic number.

It is an amenable number.

53521117 is a deficient number, since it is larger than the sum of its proper divisors (7911443).

53521117 is a wasteful number, since it uses less digits than its factorization.

53521117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1463 counting only the distinct ones).

The product of its digits is 1050, while the sum is 25.

The square root of 53521117 is about 7315.8128051502. The cubic root of 53521117 is about 376.8556720624.

The spelling of 53521117 in words is "fifty-three million, five hundred twenty-one thousand, one hundred seventeen".