1957222 has 4 divisors (see below), whose sum is σ = 2935836. Its totient is φ = 978610.

The previous prime is 1957187. The next prime is 1957243. The reversal of 1957222 is 2227591.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489304 + ... + 489307.

It is an arithmetic number, because the mean of its divisors is an integer number (733959).

2^1957222 is an apocalyptic number.

1957222 is a deficient number, since it is larger than the sum of its proper divisors (978614).

1957222 is an equidigital number, since it uses as much as digits as its factorization.

1957222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978613.

The product of its digits is 2520, while the sum is 28.

The square root of 1957222 is about 1399.0075053408. The cubic root of 1957222 is about 125.0873416240.

The spelling of 1957222 in words is "one million, nine hundred fifty-seven thousand, two hundred twenty-two".