1516551051 has 4 divisors (see below), whose sum is σ = 2022068072. Its totient is φ = 1011034032.

The previous prime is 1516551007. The next prime is 1516551053. The reversal of 1516551051 is 1501556151.

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

It is not a de Polignac number, because 1516551051 - 2⁷ = 1516550923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1516551053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252758506 + ... + 252758511.

It is an arithmetic number, because the mean of its divisors is an integer number (505517018).

Almost surely, 2^1516551051 is an apocalyptic number.

1516551051 is a deficient number, since it is larger than the sum of its proper divisors (505517021).

1516551051 is an equidigital number, since it uses as much as digits as its factorization.

1516551051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505517020.

The product of its (nonzero) digits is 3750, while the sum is 30.

The square root of 1516551051 is about 38942.9204220742. The cubic root of 1516551051 is about 1148.9091233162.

The spelling of 1516551051 in words is "one billion, five hundred sixteen million, five hundred fifty-one thousand, fifty-one".