1957255 has 4 divisors (see below), whose sum is σ = 2348712. Its totient is φ = 1565800.

The previous prime is 1957243. The next prime is 1957283. The reversal of 1957255 is 5527591.

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

It is not a de Polignac number, because 1957255 - 2⁹ = 1956743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1957255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195721 + ... + 195730.

It is an arithmetic number, because the mean of its divisors is an integer number (587178).

2^1957255 is an apocalyptic number.

1957255 is a deficient number, since it is larger than the sum of its proper divisors (391457).

1957255 is an equidigital number, since it uses as much as digits as its factorization.

1957255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391456.

The product of its digits is 15750, while the sum is 34.

The square root of 1957255 is about 1399.0192993665. The cubic root of 1957255 is about 125.0880446372.

The spelling of 1957255 in words is "one million, nine hundred fifty-seven thousand, two hundred fifty-five".