1010020051 has 4 divisors (see below), whose sum is σ = 1019286400. Its totient is φ = 1000753704.

The previous prime is 1010020027. The next prime is 1010020061. The reversal of 1010020051 is 1500200101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1010020051 - 2⁵ = 1010020019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010020061) 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, 4633011 + ... + 4633228.

It is an arithmetic number, because the mean of its divisors is an integer number (254821600).

Almost surely, 2^1010020051 is an apocalyptic number.

1010020051 is a deficient number, since it is larger than the sum of its proper divisors (9266349).

1010020051 is an equidigital number, since it uses as much as digits as its factorization.

1010020051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266348.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 1010020051 is about 31780.8126233424. The cubic root of 1010020051 is about 1003.3289229751.

Adding to 1010020051 its reverse (1500200101), we get a palindrome (2510220152).

The spelling of 1010020051 in words is "one billion, ten million, twenty thousand, fifty-one".