2055978 has 12 divisors (see below), whose sum is σ = 4454658. Its totient is φ = 685320.

The previous prime is 2055961. The next prime is 2056001. The reversal of 2055978 is 8795502.

It can be written as a sum of positive squares in only one way, i.e., 1734489 + 321489 = 1317^2 + 567^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57093 + ... + 57128.

2^2055978 is an apocalyptic number.

2055978 is an abundant number, since it is smaller than the sum of its proper divisors (2398680).

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

2055978 is a wasteful number, since it uses less digits than its factorization.

2055978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114229 (or 114226 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2055978 is about 1433.8681947794. The cubic root of 2055978 is about 127.1567700491.

The spelling of 2055978 in words is "two million, fifty-five thousand, nine hundred seventy-eight".