1556494 has 4 divisors (see below), whose sum is σ = 2334744. Its totient is φ = 778246.

The previous prime is 1556491. The next prime is 1556501. The reversal of 1556494 is 4946551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389122 + ... + 389125.

It is an arithmetic number, because the mean of its divisors is an integer number (583686).

2^1556494 is an apocalyptic number.

1556494 is a deficient number, since it is larger than the sum of its proper divisors (778250).

1556494 is an equidigital number, since it uses as much as digits as its factorization.

1556494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778249.

The product of its digits is 21600, while the sum is 34.

The square root of 1556494 is about 1247.5952869420. The cubic root of 1556494 is about 115.8908505590.

The spelling of 1556494 in words is "one million, five hundred fifty-six thousand, four hundred ninety-four".