1055720 has 16 divisors (see below), whose sum is σ = 2375460. Its totient is φ = 422272.

The previous prime is 1055713. The next prime is 1055731. The reversal of 1055720 is 275501.

It can be written as a sum of positive squares in 2 ways, for example, as 1044484 + 11236 = 1022^2 + 106^2 .

It is a super-2 number, since 2×1055720² = 2229089436800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1055692 and 1055701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13157 + ... + 13236.

2^1055720 is an apocalyptic number.

1055720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055720 is an abundant number, since it is smaller than the sum of its proper divisors (1319740).

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

1055720 is a wasteful number, since it uses less digits than its factorization.

1055720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26404 (or 26400 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 1055720 is about 1027.4823599459. The cubic root of 1055720 is about 101.8238662179.

The spelling of 1055720 in words is "one million, fifty-five thousand, seven hundred twenty".