56207121 has 8 divisors (see below), whose sum is σ = 75446400. Its totient is φ = 37219632.

The previous prime is 56207119. The next prime is 56207143. The reversal of 56207121 is 12170265.

56207121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56207121 - 2¹ = 56207119 is a prime.

It is a super-2 number, since 2×56207121² = 6318480902217282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56207091 and 56207100.

It is not an unprimeable number, because it can be changed into a prime (56207161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62425 + ... + 63318.

It is an arithmetic number, because the mean of its divisors is an integer number (9430800).

Almost surely, 2^56207121 is an apocalyptic number.

It is an amenable number.

56207121 is a deficient number, since it is larger than the sum of its proper divisors (19239279).

56207121 is a wasteful number, since it uses less digits than its factorization.

56207121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125895.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 56207121 is about 7497.1408550193. The cubic root of 56207121 is about 383.0573326857.

Adding to 56207121 its reverse (12170265), we get a palindrome (68377386).

The spelling of 56207121 in words is "fifty-six million, two hundred seven thousand, one hundred twenty-one".