52777489 has 4 divisors (see below), whose sum is σ = 52804324. Its totient is φ = 52750656.

The previous prime is 52777481. The next prime is 52777493. The reversal of 52777489 is 98477725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25654225 + 27123264 = 5065^2 + 5208^2 .

It is a cyclic number.

It is not a de Polignac number, because 52777489 - 2³ = 52777481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52777481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10212 + ... + 14485.

It is an arithmetic number, because the mean of its divisors is an integer number (13201081).

Almost surely, 2^52777489 is an apocalyptic number.

It is an amenable number.

52777489 is a deficient number, since it is larger than the sum of its proper divisors (26835).

52777489 is a wasteful number, since it uses less digits than its factorization.

52777489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26834.

The product of its digits is 987840, while the sum is 49.

The square root of 52777489 is about 7264.8116974909. The cubic root of 52777489 is about 375.1021683100.

The spelling of 52777489 in words is "fifty-two million, seven hundred seventy-seven thousand, four hundred eighty-nine".