52777777 has 8 divisors (see below), whose sum is σ = 57062376. Its totient is φ = 48525312.

The previous prime is 52777723. The next prime is 52777787. The reversal of 52777777 is 77777725.

It can be written as a sum of positive squares in 4 ways, for example, as 19149376 + 33628401 = 4376^2 + 5799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52777777 - 2¹⁹ = 52253489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52777777.

It is not an unprimeable number, because it can be changed into a prime (52777787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4558 + ... + 11239.

It is an arithmetic number, because the mean of its divisors is an integer number (7132797).

Almost surely, 2^52777777 is an apocalyptic number.

It is an amenable number.

52777777 is a deficient number, since it is larger than the sum of its proper divisors (4284599).

52777777 is a wasteful number, since it uses less digits than its factorization.

52777777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16067.

The product of its digits is 1176490, while the sum is 49.

The square root of 52777777 is about 7264.8315190375. The cubic root of 52777777 is about 375.1028506036.

It can be divided in two parts, 52 and 777777, that multiplied together give a palindrome (40444404).

The spelling of 52777777 in words is "fifty-two million, seven hundred seventy-seven thousand, seven hundred seventy-seven".