54256786 has 4 divisors (see below), whose sum is σ = 81385182. Its totient is φ = 27128392.

The previous prime is 54256781. The next prime is 54256819. The reversal of 54256786 is 68765245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68765245 = 5 ⋅13753049.

It can be written as a sum of positive squares in only one way, i.e., 40081561 + 14175225 = 6331^2 + 3765^2 .

It is not an unprimeable number, because it can be changed into a prime (54256781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13564195 + ... + 13564198.

Almost surely, 2^54256786 is an apocalyptic number.

54256786 is a deficient number, since it is larger than the sum of its proper divisors (27128396).

54256786 is a wasteful number, since it uses less digits than its factorization.

54256786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27128395.

The product of its digits is 403200, while the sum is 43.

The square root of 54256786 is about 7365.9205806199. The cubic root of 54256786 is about 378.5744975798.

The spelling of 54256786 in words is "fifty-four million, two hundred fifty-six thousand, seven hundred eighty-six".