505660101 has 8 divisors (see below), whose sum is σ = 675212064. Its totient is φ = 336607440.

The previous prime is 505660097. The next prime is 505660117. The reversal of 505660101 is 101066505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505660101 - 2² = 505660097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505660201) 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, 122455 + ... + 126516.

It is an arithmetic number, because the mean of its divisors is an integer number (84401508).

Almost surely, 2^505660101 is an apocalyptic number.

It is an amenable number.

505660101 is a deficient number, since it is larger than the sum of its proper divisors (169551963).

505660101 is a wasteful number, since it uses less digits than its factorization.

505660101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249651.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 505660101 is about 22486.8873123872. The cubic root of 505660101 is about 796.6842454723.

The spelling of 505660101 in words is "five hundred five million, six hundred sixty thousand, one hundred one".