1055500001 has 4 divisors (see below), whose sum is σ = 1058829972. Its totient is φ = 1052170032.

The previous prime is 1055499983. The next prime is 1055500007. The reversal of 1055500001 is 1000055501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143520400 + 911979601 = 11980^2 + 30199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055500001 - 2¹⁸ = 1055237857 is a prime.

It is a super-2 number, since 2×1055500001² = 2228160504222000002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055500007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664510 + ... + 1665143.

It is an arithmetic number, because the mean of its divisors is an integer number (264707493).

Almost surely, 2^1055500001 is an apocalyptic number.

It is an amenable number.

1055500001 is a deficient number, since it is larger than the sum of its proper divisors (3329971).

1055500001 is an equidigital number, since it uses as much as digits as its factorization.

1055500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329970.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 1055500001 is about 32488.4595048765. The cubic root of 1055500001 is about 1018.1679278145.

Adding to 1055500001 its reverse (1000055501), we get a palindrome (2055555502).

The spelling of 1055500001 in words is "one billion, fifty-five million, five hundred thousand, one".