1655056531 has 2 divisors, whose sum is σ = 1655056532. Its totient is φ = 1655056530.

The previous prime is 1655056463. The next prime is 1655056547. The reversal of 1655056531 is 1356505561.

It is a strong prime.

It is an emirp because it is prime and its reverse (1356505561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1655056531 - 2²⁹ = 1118185619 is a prime.

It is a super-2 number, since 2×1655056531² = 5478424241611507922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1655056591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827528265 + 827528266.

It is an arithmetic number, because the mean of its divisors is an integer number (827528266).

Almost surely, 2^1655056531 is an apocalyptic number.

1655056531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655056531 is an equidigital number, since it uses as much as digits as its factorization.

1655056531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 1655056531 is about 40682.3860042648. The cubic root of 1655056531 is about 1182.8716163557.

The spelling of 1655056531 in words is "one billion, six hundred fifty-five million, fifty-six thousand, five hundred thirty-one".