1560665051 has 4 divisors (see below), whose sum is σ = 1702543704. Its totient is φ = 1418786400.

The previous prime is 1560665003. The next prime is 1560665077. The reversal of 1560665051 is 1505660651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1560665051 - 2²⁶ = 1493556187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1560665081) 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 in 3 ways as a sum of consecutive naturals, for example, 70939310 + ... + 70939331.

It is an arithmetic number, because the mean of its divisors is an integer number (425635926).

Almost surely, 2^1560665051 is an apocalyptic number.

1560665051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1560665051 is a deficient number, since it is larger than the sum of its proper divisors (141878653).

1560665051 is a wasteful number, since it uses less digits than its factorization.

1560665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141878652.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1560665051 is about 39505.2534607740. The cubic root of 1560665051 is about 1159.9427862685.

The spelling of 1560665051 in words is "one billion, five hundred sixty million, six hundred sixty-five thousand, fifty-one".