505515616 has 12 divisors (see below), whose sum is σ = 995233932. Its totient is φ = 252757792.

The previous prime is 505515613. The next prime is 505515623. The reversal of 505515616 is 616515505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505515613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7898650 + ... + 7898713.

It is an arithmetic number, because the mean of its divisors is an integer number (82936161).

Almost surely, 2^505515616 is an apocalyptic number.

It is an amenable number.

505515616 is a deficient number, since it is larger than the sum of its proper divisors (489718316).

505515616 is a wasteful number, since it uses less digits than its factorization.

505515616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15797373 (or 15797365 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 505515616 is about 22483.6744327968. The cubic root of 505515616 is about 796.6083579421.

The spelling of 505515616 in words is "five hundred five million, five hundred fifteen thousand, six hundred sixteen".