1055831665 has 24 divisors (see below), whose sum is σ = 1560558312. Its totient is φ = 681408000.

The previous prime is 1055831663. The next prime is 1055831669. The reversal of 1055831665 is 5661385501.

It can be written as a sum of positive squares in 4 ways, for example, as 503957601 + 551874064 = 22449^2 + 23492^2 .

It is not a de Polignac number, because 1055831665 - 2¹ = 1055831663 is a prime.

It is a super-2 number, since 2×1055831665² = 2229561009633344450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055831663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122586 + ... + 130915.

It is an arithmetic number, because the mean of its divisors is an integer number (65023263).

Almost surely, 2^1055831665 is an apocalyptic number.

It is an amenable number.

1055831665 is a deficient number, since it is larger than the sum of its proper divisors (504726647).

1055831665 is a wasteful number, since it uses less digits than its factorization.

1055831665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253537 (or 253530 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1055831665 is about 32493.5634395491. The cubic root of 1055831665 is about 1018.2745610952.

The spelling of 1055831665 in words is "one billion, fifty-five million, eight hundred thirty-one thousand, six hundred sixty-five".