56250613 has 2 divisors, whose sum is σ = 56250614. Its totient is φ = 56250612.

The previous prime is 56250589. The next prime is 56250631. The reversal of 56250613 is 31605265.

Together with next prime (56250631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55621764 + 628849 = 7458^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 56250613 - 2¹³ = 56242421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56250643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28125306 + 28125307.

It is an arithmetic number, because the mean of its divisors is an integer number (28125307).

Almost surely, 2^56250613 is an apocalyptic number.

It is an amenable number.

56250613 is a deficient number, since it is larger than the sum of its proper divisors (1).

56250613 is an equidigital number, since it uses as much as digits as its factorization.

56250613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56250613 is about 7500.0408665553. The cubic root of 56250613 is about 383.1561080367.

Adding to 56250613 its reverse (31605265), we get a palindrome (87855878).

The spelling of 56250613 in words is "fifty-six million, two hundred fifty thousand, six hundred thirteen".