2171056530 has 16 divisors (see below), whose sum is σ = 5210535744. Its totient is φ = 578948400.

The previous prime is 2171056499. The next prime is 2171056561. The reversal of 2171056530 is 356501712.

It is an interprime number because it is at equal distance from previous prime (2171056499) and next prime (2171056561).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 72368551 = 2171056530 / (2 + 1 + 7 + 1 + 0 + 5 + 6 + 5 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36184246 + ... + 36184305.

It is an arithmetic number, because the mean of its divisors is an integer number (325658484).

Almost surely, 2^2171056530 is an apocalyptic number.

2171056530 is an abundant number, since it is smaller than the sum of its proper divisors (3039479214).

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

2171056530 is a wasteful number, since it uses less digits than its factorization.

2171056530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72368561.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 2171056530 is about 46594.5976482253. The cubic root of 2171056530 is about 1294.8626698535.

The spelling of 2171056530 in words is "two billion, one hundred seventy-one million, fifty-six thousand, five hundred thirty".