1970557 has 4 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 1965436.

The previous prime is 1970543. The next prime is 1970567. The reversal of 1970557 is 7550791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1970557 - 2⁷ = 1970429 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 (1970567) 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, 1933 + ... + 2770.

It is an arithmetic number, because the mean of its divisors is an integer number (493920).

2^1970557 is an apocalyptic number.

It is an amenable number.

1970557 is a deficient number, since it is larger than the sum of its proper divisors (5123).

1970557 is an equidigital number, since it uses as much as digits as its factorization.

1970557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 1970557 is about 1403.7652937724. The cubic root of 1970557 is about 125.3707817464.

The spelling of 1970557 in words is "one million, nine hundred seventy thousand, five hundred fifty-seven".