1556048531 has 2 divisors, whose sum is σ = 1556048532. Its totient is φ = 1556048530.

The previous prime is 1556048519. The next prime is 1556048537. The reversal of 1556048531 is 1358406551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1556048531 - 2¹⁴ = 1556032147 is a prime.

It is a super-2 number, since 2×1556048531² = 4842574061654515922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1556048537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778024265 + 778024266.

It is an arithmetic number, because the mean of its divisors is an integer number (778024266).

Almost surely, 2^1556048531 is an apocalyptic number.

1556048531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1556048531 is an equidigital number, since it uses as much as digits as its factorization.

1556048531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 1556048531 is about 39446.7809966796. The cubic root of 1556048531 is about 1158.7979350663.

The spelling of 1556048531 in words is "one billion, five hundred fifty-six million, forty-eight thousand, five hundred thirty-one".