56213401 has 4 divisors (see below), whose sum is σ = 56507904. Its totient is φ = 55918900.

The previous prime is 56213393. The next prime is 56213411. The reversal of 56213401 is 10431265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56213401 - 2³ = 56213393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56213411) 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 in 3 ways as a sum of consecutive naturals, for example, 146965 + ... + 147346.

It is an arithmetic number, because the mean of its divisors is an integer number (14126976).

Almost surely, 2^56213401 is an apocalyptic number.

It is an amenable number.

56213401 is a deficient number, since it is larger than the sum of its proper divisors (294503).

56213401 is a wasteful number, since it uses less digits than its factorization.

56213401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294502.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 56213401 is about 7497.5596696525. The cubic root of 56213401 is about 383.0715984372.

Adding to 56213401 its reverse (10431265), we get a palindrome (66644666).

The spelling of 56213401 in words is "fifty-six million, two hundred thirteen thousand, four hundred one".