1556493241 has 8 divisors (see below), whose sum is σ = 1588678920. Its totient is φ = 1524412032.

The previous prime is 1556493223. The next prime is 1556493271. The reversal of 1556493241 is 1423946551.

It can be written as a sum of positive squares in 4 ways, for example, as 95648400 + 1460844841 = 9780^2 + 38221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1556493241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1556493194 and 1556493203.

It is not an unprimeable number, because it can be changed into a prime (1556493271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4351 + ... + 55963.

It is an arithmetic number, because the mean of its divisors is an integer number (198584865).

Almost surely, 2^1556493241 is an apocalyptic number.

It is an amenable number.

1556493241 is a deficient number, since it is larger than the sum of its proper divisors (32185679).

1556493241 is an equidigital number, since it uses as much as digits as its factorization.

1556493241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52235.

The product of its digits is 129600, while the sum is 40.

The square root of 1556493241 is about 39452.4174291006. The cubic root of 1556493241 is about 1158.9083172158.

The spelling of 1556493241 in words is "one billion, five hundred fifty-six million, four hundred ninety-three thousand, two hundred forty-one".