505601010601 has 4 divisors (see below), whose sum is σ = 505602640852. Its totient is φ = 505599380352.

The previous prime is 505601010583. The next prime is 505601010611. The reversal of 505601010601 is 106010106505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62950308201 + 442650702400 = 250899^2 + 665320^2 .

It is a cyclic number.

It is not a de Polignac number, because 505601010601 - 2²³ = 505592621993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505601010611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190236 + ... + 1023421.

It is an arithmetic number, because the mean of its divisors is an integer number (126400660213).

Almost surely, 2^505601010601 is an apocalyptic number.

It is an amenable number.

505601010601 is a deficient number, since it is larger than the sum of its proper divisors (1630251).

505601010601 is a wasteful number, since it uses less digits than its factorization.

505601010601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630250.

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 505601010601 in words is "five hundred five billion, six hundred one million, ten thousand, six hundred one".