56871401 has 4 divisors (see below), whose sum is σ = 56894532. Its totient is φ = 56848272.

The previous prime is 56871379. The next prime is 56871403. The reversal of 56871401 is 10417865.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10417865 = 5 ⋅2083573.

It can be written as a sum of positive squares in 2 ways, for example, as 49843600 + 7027801 = 7060^2 + 2651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56871401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56871403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7370 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (14223633).

Almost surely, 2^56871401 is an apocalyptic number.

It is an amenable number.

56871401 is a deficient number, since it is larger than the sum of its proper divisors (23131).

56871401 is a wasteful number, since it uses less digits than its factorization.

56871401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23130.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 56871401 is about 7541.3129493477. The cubic root of 56871401 is about 384.5604721573.

The spelling of 56871401 in words is "fifty-six million, eight hundred seventy-one thousand, four hundred one".