53777485 has 4 divisors (see below), whose sum is σ = 64532988. Its totient is φ = 43021984.

The previous prime is 53777461. The next prime is 53777489. The reversal of 53777485 is 58477735.

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 25867396 + 27910089 = 5086^2 + 5283^2 .

It is a cyclic number.

It is not a de Polignac number, because 53777485 - 2⁷ = 53777357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53777489) 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, 5377744 + ... + 5377753.

It is an arithmetic number, because the mean of its divisors is an integer number (16133247).

Almost surely, 2^53777485 is an apocalyptic number.

It is an amenable number.

53777485 is a deficient number, since it is larger than the sum of its proper divisors (10755503).

53777485 is a wasteful number, since it uses less digits than its factorization.

53777485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755502.

The product of its digits is 823200, while the sum is 46.

The square root of 53777485 is about 7333.3133711850. The cubic root of 53777485 is about 377.4564310929.

The spelling of 53777485 in words is "fifty-three million, seven hundred seventy-seven thousand, four hundred eighty-five".