53660517 has 16 divisors (see below), whose sum is σ = 77520960. Its totient is φ = 32884992.

The previous prime is 53660507. The next prime is 53660567. The reversal of 53660517 is 71506635.

It is not a de Polignac number, because 53660517 - 2⁸ = 53660261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53660507) 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, 10042 + ... + 14427.

It is an arithmetic number, because the mean of its divisors is an integer number (4845060).

Almost surely, 2^53660517 is an apocalyptic number.

It is an amenable number.

53660517 is a deficient number, since it is larger than the sum of its proper divisors (23860443).

53660517 is a wasteful number, since it uses less digits than its factorization.

53660517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24532.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 53660517 is about 7325.3339173037. Note that the first 3 decimals coincide. The cubic root of 53660517 is about 377.1825719237.

The spelling of 53660517 in words is "fifty-three million, six hundred sixty thousand, five hundred seventeen".