1055645140 has 36 divisors (see below), whose sum is σ = 2436713748. Its totient is φ = 383870080.

The previous prime is 1055645137. The next prime is 1055645167. The reversal of 1055645140 is 415465501.

It can be written as a sum of positive squares in 2 ways, for example, as 785568784 + 270076356 = 28028^2 + 16434^2 .

It is a super-2 number, since 2×1055645140² = 2228773323211239200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215689 + ... + 220528.

It is an arithmetic number, because the mean of its divisors is an integer number (67686493).

Almost surely, 2^1055645140 is an apocalyptic number.

1055645140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055645140 is an abundant number, since it is smaller than the sum of its proper divisors (1381068608).

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

1055645140 is a wasteful number, since it uses less digits than its factorization.

1055645140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436248 (or 436235 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 1055645140 is about 32490.6931289562. The cubic root of 1055645140 is about 1018.2145941975.

It can be divided in two parts, 10556 and 45140, that added together give a square (55696 = 236²).

The spelling of 1055645140 in words is "one billion, fifty-five million, six hundred forty-five thousand, one hundred forty".