56618101 has 2 divisors, whose sum is σ = 56618102. Its totient is φ = 56618100.

The previous prime is 56618099. The next prime is 56618117. The reversal of 56618101 is 10181665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38564100 + 18054001 = 6210^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 56618101 - 2¹ = 56618099 is a prime.

Together with 56618099, it forms a pair of twin primes.

It is the 7525-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 56618101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56618131) by changing a digit.

It is a nontrivial repunit in base 7524.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28309050 + 28309051.

It is an arithmetic number, because the mean of its divisors is an integer number (28309051).

Almost surely, 2^56618101 is an apocalyptic number.

It is an amenable number.

56618101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56618101 is an equidigital number, since it uses as much as digits as its factorization.

56618101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 56618101 is about 7524.5000498372. The cubic root of 56618101 is about 383.9886900785.

Adding to 56618101 its reverse (10181665), we get a palindrome (66799766).

The spelling of 56618101 in words is "fifty-six million, six hundred eighteen thousand, one hundred one".