1055321001 has 64 divisors (see below), whose sum is σ = 1836172800. Its totient is φ = 586579968.

The previous prime is 1055320999. The next prime is 1055321039. The reversal of 1055321001 is 1001235501.

1055321001 is a `hidden beast` number, since 10 + 553 + 2 + 100 + 1 = 666.

It is not a de Polignac number, because 1055321001 - 2¹ = 1055320999 is a prime.

It is a super-2 number, since 2×1055321001² = 2227404830303284002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1055321041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1371945 + ... + 1372713.

It is an arithmetic number, because the mean of its divisors is an integer number (28690200).

Almost surely, 2^1055321001 is an apocalyptic number.

It is an amenable number.

1055321001 is a deficient number, since it is larger than the sum of its proper divisors (780851799).

1055321001 is a wasteful number, since it uses less digits than its factorization.

1055321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1055321001 is about 32485.7045637000. The cubic root of 1055321001 is about 1018.1103682495.

Adding to 1055321001 its reverse (1001235501), we get a palindrome (2056556502).

The spelling of 1055321001 in words is "one billion, fifty-five million, three hundred twenty-one thousand, one".