2051020530 has 96 divisors (see below), whose sum is σ = 5776623216. Its totient is φ = 501898752.

The previous prime is 2051020529. The next prime is 2051020537. The reversal of 2051020530 is 350201502.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1300972761 + 750047769 = 36069^2 + 27387^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2051020537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197344 + ... + 207476.

Almost surely, 2^2051020530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051020530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2888311608).

2051020530 is an abundant number, since it is smaller than the sum of its proper divisors (3725602686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051020530 is a wasteful number, since it uses less digits than its factorization.

2051020530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10332 (or 10329 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2051020530 is about 45288.1941569765. The cubic root of 2051020530 is about 1270.5448568350.

The spelling of 2051020530 in words is "two billion, fifty-one million, twenty thousand, five hundred thirty".