2053778 has 8 divisors (see below), whose sum is σ = 3109260. Its totient is φ = 1017360.

The previous prime is 2053771. The next prime is 2053783. The reversal of 2053778 is 8773502.

It can be written as a sum of positive squares in 2 ways, for example, as 2053489 + 289 = 1433^2 + 17^2 .

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

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (2053771) 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, 4493 + ... + 4928.

2^2053778 is an apocalyptic number.

2053778 is a deficient number, since it is larger than the sum of its proper divisors (1055482).

2053778 is a wasteful number, since it uses less digits than its factorization.

2053778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2053778 is about 1433.1008338564. The cubic root of 2053778 is about 127.1113991464. Note that the first 3 decimals are identical.

The spelling of 2053778 in words is "two million, fifty-three thousand, seven hundred seventy-eight".