1655655247 has 2 divisors, whose sum is σ = 1655655248. Its totient is φ = 1655655246.

The previous prime is 1655655149. The next prime is 1655655277. The reversal of 1655655247 is 7425565561.

It is a strong prime.

It is an emirp because it is prime and its reverse (7425565561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1655655247 - 2¹¹ = 1655653199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1655655197 and 1655655206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655655277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827827623 + 827827624.

It is an arithmetic number, because the mean of its divisors is an integer number (827827624).

Almost surely, 2^1655655247 is an apocalyptic number.

1655655247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655655247 is an equidigital number, since it uses as much as digits as its factorization.

1655655247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 46.

The square root of 1655655247 is about 40689.7437568732. The cubic root of 1655655247 is about 1183.0142335955.

The spelling of 1655655247 in words is "one billion, six hundred fifty-five million, six hundred fifty-five thousand, two hundred forty-seven".