53750778 has 16 divisors (see below), whose sum is σ = 107585280. Its totient is φ = 17902976.

The previous prime is 53750777. The next prime is 53750789. The reversal of 53750778 is 87705735.

It is a super-2 number, since 2×53750778² = 5778292271210568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53750771) 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, 7543 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (6724080).

Almost surely, 2^53750778 is an apocalyptic number.

53750778 is an abundant number, since it is smaller than the sum of its proper divisors (53834502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53750778 is a wasteful number, since it uses less digits than its factorization.

53750778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6981.

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 53750778 is about 7331.4922082752. The cubic root of 53750778 is about 377.3939365494.

It can be divided in two parts, 537 and 50778, that added together give a palindrome (51315).

The spelling of 53750778 in words is "fifty-three million, seven hundred fifty thousand, seven hundred seventy-eight".