1056551001 has 32 divisors (see below), whose sum is σ = 1558103040. Its totient is φ = 631512000.

The previous prime is 1056550981. The next prime is 1056551029. The reversal of 1056551001 is 1001556501.

It is not a de Polignac number, because 1056551001 - 2¹⁵ = 1056518233 is a prime.

It is a super-2 number, since 2×1056551001² = 2232600035428204002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056551101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1196106 + ... + 1196988.

It is an arithmetic number, because the mean of its divisors is an integer number (48690720).

Almost surely, 2^1056551001 is an apocalyptic number.

1056551001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1056551001 is a deficient number, since it is larger than the sum of its proper divisors (501552039).

1056551001 is a wasteful number, since it uses less digits than its factorization.

1056551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1056551001 is about 32504.6304547521. The cubic root of 1056551001 is about 1018.5057580719.

The spelling of 1056551001 in words is "one billion, fifty-six million, five hundred fifty-one thousand, one".