1957172 has 12 divisors (see below), whose sum is σ = 3914400. Its totient is φ = 838776.

The previous prime is 1957157. The next prime is 1957187. The reversal of 1957172 is 2717591.

It is an interprime number because it is at equal distance from previous prime (1957157) and next prime (1957187).

1957172 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34922 + ... + 34977.

It is an arithmetic number, because the mean of its divisors is an integer number (326200).

2^1957172 is an apocalyptic number.

It is an amenable number.

1957172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1957172 is a wasteful number, since it uses less digits than its factorization.

1957172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69910 (or 69908 counting only the distinct ones).

The product of its digits is 4410, while the sum is 32.

The square root of 1957172 is about 1398.9896354155. The cubic root of 1957172 is about 125.0862764373.

The spelling of 1957172 in words is "one million, nine hundred fifty-seven thousand, one hundred seventy-two".