56526013 has 2 divisors, whose sum is σ = 56526014. Its totient is φ = 56526012.

The previous prime is 56525971. The next prime is 56526023. The reversal of 56526013 is 31062565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53846244 + 2679769 = 7338^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 56526013 - 2¹³ = 56517821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56526023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28263006 + 28263007.

It is an arithmetic number, because the mean of its divisors is an integer number (28263007).

Almost surely, 2^56526013 is an apocalyptic number.

It is an amenable number.

56526013 is a deficient number, since it is larger than the sum of its proper divisors (1).

56526013 is an equidigital number, since it uses as much as digits as its factorization.

56526013 is an odious number, because the sum of its binary digits is odd.

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

The square root of 56526013 is about 7518.3783490857. The cubic root of 56526013 is about 383.7803942723.

Adding to 56526013 its reverse (31062565), we get a palindrome (87588578).

The spelling of 56526013 in words is "fifty-six million, five hundred twenty-six thousand, thirteen".