1565655055 has 8 divisors (see below), whose sum is σ = 1879390800. Its totient is φ = 1252120896.

The previous prime is 1565655053. The next prime is 1565655061. The reversal of 1565655055 is 5505565651.

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

It is a cyclic number.

It is not a de Polignac number, because 1565655055 - 2¹ = 1565655053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565655053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32745 + ... + 64834.

It is an arithmetic number, because the mean of its divisors is an integer number (234923850).

Almost surely, 2^1565655055 is an apocalyptic number.

1565655055 is a deficient number, since it is larger than the sum of its proper divisors (313735745).

1565655055 is an equidigital number, since it uses as much as digits as its factorization.

1565655055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100793.

The product of its (nonzero) digits is 562500, while the sum is 43.

The square root of 1565655055 is about 39568.3592659590. The cubic root of 1565655055 is about 1161.1777215885.

The spelling of 1565655055 in words is "one billion, five hundred sixty-five million, six hundred fifty-five thousand, fifty-five".