56777249 has 4 divisors (see below), whose sum is σ = 56809620. Its totient is φ = 56744880.

The previous prime is 56777239. The next prime is 56777291. The reversal of 56777249 is 94277765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94277765 = 5 ⋅18855553.

It can be written as a sum of positive squares in 2 ways, for example, as 46225 + 56731024 = 215^2 + 7532^2 .

It is a cyclic number.

It is not a de Polignac number, because 56777249 - 2²⁴ = 40000033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56777239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13394 + ... + 17115.

It is an arithmetic number, because the mean of its divisors is an integer number (14202405).

Almost surely, 2^56777249 is an apocalyptic number.

It is an amenable number.

56777249 is a deficient number, since it is larger than the sum of its proper divisors (32371).

56777249 is a wasteful number, since it uses less digits than its factorization.

56777249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32370.

The product of its digits is 740880, while the sum is 47.

The square root of 56777249 is about 7535.0679492623. The cubic root of 56777249 is about 384.3481385067.

The spelling of 56777249 in words is "fifty-six million, seven hundred seventy-seven thousand, two hundred forty-nine".