56423401 has 2 divisors, whose sum is σ = 56423402. Its totient is φ = 56423400.

The previous prime is 56423399. The next prime is 56423417. The reversal of 56423401 is 10432465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51912025 + 4511376 = 7205^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 56423401 - 2¹ = 56423399 is a prime.

Together with 56423399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56423201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28211700 + 28211701.

It is an arithmetic number, because the mean of its divisors is an integer number (28211701).

Almost surely, 2^56423401 is an apocalyptic number.

It is an amenable number.

56423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

56423401 is an equidigital number, since it uses as much as digits as its factorization.

56423401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 56423401 is about 7511.5511713627. The cubic root of 56423401 is about 383.5480273496.

Adding to 56423401 its reverse (10432465), we get a palindrome (66855866).

The spelling of 56423401 in words is "fifty-six million, four hundred twenty-three thousand, four hundred one".