53125778 has 8 divisors (see below), whose sum is σ = 80093772. Its totient is φ = 26427856.

The previous prime is 53125777. The next prime is 53125781. The reversal of 53125778 is 87752135.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50225569 + 2900209 = 7087^2 + 1703^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53125771) 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, 67025 + ... + 67812.

Almost surely, 2^53125778 is an apocalyptic number.

53125778 is a deficient number, since it is larger than the sum of its proper divisors (26967994).

53125778 is a wasteful number, since it uses less digits than its factorization.

53125778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135036.

The product of its digits is 58800, while the sum is 38.

The square root of 53125778 is about 7288.7432387209. The cubic root of 53125778 is about 375.9254841394.

The spelling of 53125778 in words is "fifty-three million, one hundred twenty-five thousand, seven hundred seventy-eight".