56169401 has 2 divisors, whose sum is σ = 56169402. Its totient is φ = 56169400.

The previous prime is 56169389. The next prime is 56169403. The reversal of 56169401 is 10496165.

56169401 = 5299² + 5300².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 28079401 = 5300^2 + 5299^2 .

It is a cyclic number.

It is not a de Polignac number, because 56169401 - 2¹⁰ = 56168377 is a prime.

Together with 56169403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56169403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28084700 + 28084701.

It is an arithmetic number, because the mean of its divisors is an integer number (28084701).

Almost surely, 2^56169401 is an apocalyptic number.

56169401 is the 5300-th centered square number.

It is an amenable number.

56169401 is a deficient number, since it is larger than the sum of its proper divisors (1).

56169401 is an equidigital number, since it uses as much as digits as its factorization.

56169401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 56169401 is about 7494.6248071535. The cubic root of 56169401 is about 382.9716249455.

The spelling of 56169401 in words is "fifty-six million, one hundred sixty-nine thousand, four hundred one".