1557012 has 24 divisors (see below), whose sum is σ = 3824800. Its totient is φ = 491616.

The previous prime is 1557007. The next prime is 1557019. The reversal of 1557012 is 2107551.

It is a self number, because there is not a number n which added to its sum of digits gives 1557012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3187 + ... + 3642.

2^1557012 is an apocalyptic number.

1557012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1557012 is an abundant number, since it is smaller than the sum of its proper divisors (2267788).

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

1557012 is a wasteful number, since it uses less digits than its factorization.

1557012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855 (or 6853 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1557012 is about 1247.8028690462. The cubic root of 1557012 is about 115.9037052616.

The spelling of 1557012 in words is "one million, five hundred fifty-seven thousand, twelve".