53131778 has 24 divisors (see below), whose sum is σ = 95221692. Its totient is φ = 22153824.

The previous prime is 53131769. The next prime is 53131781. The reversal of 53131778 is 87713135.

It can be written as a sum of positive squares in 2 ways, for example, as 45252529 + 7879249 = 6727^2 + 2807^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3701 + ... + 10952.

Almost surely, 2^53131778 is an apocalyptic number.

53131778 is a deficient number, since it is larger than the sum of its proper divisors (42089914).

53131778 is a wasteful number, since it uses less digits than its factorization.

53131778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14706 (or 14699 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 53131778 is about 7289.1548206908. The cubic root of 53131778 is about 375.9396358882.

The spelling of 53131778 in words is "fifty-three million, one hundred thirty-one thousand, seven hundred seventy-eight".