56009401 has 6 divisors (see below), whose sum is σ = 65153850. Its totient is φ = 48008016.

The previous prime is 56009399. The next prime is 56009417. The reversal of 56009401 is 10490065.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 3519376 = 7245^2 + 1876^2 .

It is not a de Polignac number, because 56009401 - 2¹ = 56009399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56009461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571476 + ... + 571573.

It is an arithmetic number, because the mean of its divisors is an integer number (10858975).

Almost surely, 2^56009401 is an apocalyptic number.

It is an amenable number.

56009401 is a deficient number, since it is larger than the sum of its proper divisors (9144449).

56009401 is a wasteful number, since it uses less digits than its factorization.

56009401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143063 (or 1143056 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 56009401 is about 7483.9428779220. The cubic root of 56009401 is about 382.6076442447.

Adding to 56009401 its reverse (10490065), we get a palindrome (66499466).

The spelling of 56009401 in words is "fifty-six million, nine thousand, four hundred one".