1055329785 has 24 divisors (see below), whose sum is σ = 1832790024. Its totient is φ = 561749760.

The previous prime is 1055329777. The next prime is 1055329801. The reversal of 1055329785 is 5879235501.

1055329785 is a `hidden beast` number, since 1 + 0 + 553 + 2 + 97 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10036224 + 1045293561 = 3168^2 + 32331^2 .

It is not a de Polignac number, because 1055329785 - 2³ = 1055329777 is a prime.

It is a super-2 number, since 2×1055329785² = 2227441910216292450, which contains 22 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055329785.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939 + ... + 45951.

It is an arithmetic number, because the mean of its divisors is an integer number (76366251).

Almost surely, 2^1055329785 is an apocalyptic number.

1055329785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055329785 is a deficient number, since it is larger than the sum of its proper divisors (777460239).

1055329785 is a wasteful number, since it uses less digits than its factorization.

1055329785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45545 (or 45542 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 1055329785 is about 32485.8397613483. The cubic root of 1055329785 is about 1018.1131930004.

The spelling of 1055329785 in words is "one billion, fifty-five million, three hundred twenty-nine thousand, seven hundred eighty-five".