1056501001 has 8 divisors (see below), whose sum is σ = 1093727880. Its totient is φ = 1019327232.

The previous prime is 1056500999. The next prime is 1056501007. The reversal of 1056501001 is 1001056501.

It can be written as a sum of positive squares in 4 ways, for example, as 404975376 + 651525625 = 20124^2 + 25525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1056501001 - 2¹ = 1056500999 is a prime.

It is a super-2 number, since 2×1056501001² = 2232388730228004002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056501001.

It is not an unprimeable number, because it can be changed into a prime (1056501007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29601 + ... + 54673.

It is an arithmetic number, because the mean of its divisors is an integer number (136715985).

Almost surely, 2^1056501001 is an apocalyptic number.

It is an amenable number.

1056501001 is a deficient number, since it is larger than the sum of its proper divisors (37226879).

1056501001 is a wasteful number, since it uses less digits than its factorization.

1056501001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26555.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1056501001 is about 32503.8613244642. The cubic root of 1056501001 is about 1018.4896913001.

Adding to 1056501001 its reverse (1001056501), we get a palindrome (2057557502).

The spelling of 1056501001 in words is "one billion, fifty-six million, five hundred one thousand, one".