2197557 has 16 divisors (see below), whose sum is σ = 3280000. Its totient is φ = 1454112.

The previous prime is 2197537. The next prime is 2197561. The reversal of 2197557 is 7557912.

It is not a de Polignac number, because 2197557 - 2⁶ = 2197493 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5169 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (205000).

2^2197557 is an apocalyptic number.

2197557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2197557 is a deficient number, since it is larger than the sum of its proper divisors (1082443).

2197557 is a wasteful number, since it uses less digits than its factorization.

2197557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 611 counting only the distinct ones).

The product of its digits is 22050, while the sum is 36.

The square root of 2197557 is about 1482.4159335355. The cubic root of 2197557 is about 130.0109852650.

It can be divided in two parts, 219 and 7557, that added together give a 5-th power (7776 = 6⁵).

The spelling of 2197557 in words is "two million, one hundred ninety-seven thousand, five hundred fifty-seven".