56726749 has 2 divisors, whose sum is σ = 56726750. Its totient is φ = 56726748.

The previous prime is 56726729. The next prime is 56726777. The reversal of 56726749 is 94762765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 101124 = 7525^2 + 318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56726749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56726699 and 56726708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56726729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28363374 + 28363375.

It is an arithmetic number, because the mean of its divisors is an integer number (28363375).

Almost surely, 2^56726749 is an apocalyptic number.

It is an amenable number.

56726749 is a deficient number, since it is larger than the sum of its proper divisors (1).

56726749 is an equidigital number, since it uses as much as digits as its factorization.

56726749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 56726749 is about 7531.7162054873. The cubic root of 56726749 is about 384.2341530710.

It can be divided in two parts, 56726 and 749, that added together give a palindrome (57475).

The spelling of 56726749 in words is "fifty-six million, seven hundred twenty-six thousand, seven hundred forty-nine".