1555972 has 12 divisors (see below), whose sum is σ = 2970576. Its totient is φ = 707240.

The previous prime is 1555969. The next prime is 1555997. The reversal of 1555972 is 2795551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17638 + ... + 17725.

It is an arithmetic number, because the mean of its divisors is an integer number (247548).

2^1555972 is an apocalyptic number.

It is an amenable number.

1555972 is a deficient number, since it is larger than the sum of its proper divisors (1414604).

1555972 is a wasteful number, since it uses less digits than its factorization.

1555972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35378 (or 35376 counting only the distinct ones).

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

The square root of 1555972 is about 1247.3860669416. The cubic root of 1555972 is about 115.8778937069.

The spelling of 1555972 in words is "one million, five hundred fifty-five thousand, nine hundred seventy-two".