1055778 has 8 divisors (see below), whose sum is σ = 2111568. Its totient is φ = 351924.

The previous prime is 1055771. The next prime is 1055783. The reversal of 1055778 is 8775501.

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

1055778 is an admirable number.

It is a super-2 number, since 2×1055778² = 2229334370568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055771) 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, 87976 + ... + 87987.

It is an arithmetic number, because the mean of its divisors is an integer number (263946).

2^1055778 is an apocalyptic number.

1055778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1055778 is a wasteful number, since it uses less digits than its factorization.

1055778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175968.

The product of its (nonzero) digits is 9800, while the sum is 33.

The square root of 1055778 is about 1027.5105838871. The cubic root of 1055778 is about 101.8257308777.

The spelling of 1055778 in words is "one million, fifty-five thousand, seven hundred seventy-eight".