56645101 has 2 divisors, whose sum is σ = 56645102. Its totient is φ = 56645100.

The previous prime is 56645063. The next prime is 56645117. The reversal of 56645101 is 10154665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38378025 + 18267076 = 6195^2 + 4274^2 .

It is a cyclic number.

It is not a de Polignac number, because 56645101 - 2¹⁵ = 56612333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56645101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56645131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28322550 + 28322551.

It is an arithmetic number, because the mean of its divisors is an integer number (28322551).

Almost surely, 2^56645101 is an apocalyptic number.

It is an amenable number.

56645101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56645101 is an equidigital number, since it uses as much as digits as its factorization.

56645101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 56645101 is about 7526.2939751248. The cubic root of 56645101 is about 384.0497191301.

Adding to 56645101 its reverse (10154665), we get a palindrome (66799766).

The spelling of 56645101 in words is "fifty-six million, six hundred forty-five thousand, one hundred one".