2197530 has 40 divisors (see below), whose sum is σ = 5911092. Its totient is φ = 585792.

The previous prime is 2197523. The next prime is 2197537. The reversal of 2197530 is 357912.

It is an interprime number because it is at equal distance from previous prime (2197523) and next prime (2197537).

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 149769 = 1431^2 + 387^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2197494 and 2197503.

It is not an unprimeable number, because it can be changed into a prime (2197537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 547 + ... + 2166.

2^2197530 is an apocalyptic number.

2197530 is an abundant number, since it is smaller than the sum of its proper divisors (3713562).

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

2197530 is a wasteful number, since it uses less digits than its factorization.

2197530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2197530 is about 1482.4068267517. The cubic root of 2197530 is about 130.0104528084.

The spelling of 2197530 in words is "two million, one hundred ninety-seven thousand, five hundred thirty".