55517601 has 16 divisors (see below), whose sum is σ = 79735040. Its totient is φ = 34246800.

The previous prime is 55517591. The next prime is 55517611. The reversal of 55517601 is 10671555.

It is an interprime number because it is at equal distance from previous prime (55517591) and next prime (55517611).

It is not a de Polignac number, because 55517601 - 2¹³ = 55509409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55517611) 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, 8875 + ... + 13776.

It is an arithmetic number, because the mean of its divisors is an integer number (4983440).

Almost surely, 2^55517601 is an apocalyptic number.

It is an amenable number.

55517601 is a deficient number, since it is larger than the sum of its proper divisors (24217439).

55517601 is a wasteful number, since it uses less digits than its factorization.

55517601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22716.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 55517601 is about 7451.0134210052. The cubic root of 55517601 is about 381.4845001481.

The spelling of 55517601 in words is "fifty-five million, five hundred seventeen thousand, six hundred one".