1055755665 has 48 divisors (see below), whose sum is σ = 1855701120. Its totient is φ = 555206400.

The previous prime is 1055755661. The next prime is 1055755681. The reversal of 1055755665 is 5665575501.

1055755665 is a `hidden beast` number, since 10 + 5 + 5 + 75 + 566 + 5 = 666.

It is not a de Polignac number, because 1055755665 - 2² = 1055755661 is a prime.

It is a super-2 number, since 2×1055755665² = 2229240048359184450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1055755665.

It is not an unprimeable number, because it can be changed into a prime (1055755661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1756365 + ... + 1756965.

It is an arithmetic number, because the mean of its divisors is an integer number (38660440).

Almost surely, 2^1055755665 is an apocalyptic number.

1055755665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055755665 is a deficient number, since it is larger than the sum of its proper divisors (799945455).

1055755665 is a wasteful number, since it uses less digits than its factorization.

1055755665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 787500, while the sum is 45.

The square root of 1055755665 is about 32492.3939561246. The cubic root of 1055755665 is about 1018.2501283104.

The spelling of 1055755665 in words is "one billion, fifty-five million, seven hundred fifty-five thousand, six hundred sixty-five".