2151335545 has 16 divisors (see below), whose sum is σ = 2602808208. Its totient is φ = 1706987520.

The previous prime is 2151335539. The next prime is 2151335569. The reversal of 2151335545 is 5455331512.

It can be written as a sum of positive squares in 8 ways, for example, as 344065401 + 1807270144 = 18549^2 + 42512^2 .

It is not a de Polignac number, because 2151335545 - 2²³ = 2142946937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151335545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328705 + ... + 335185.

It is an arithmetic number, because the mean of its divisors is an integer number (162675513).

Almost surely, 2^2151335545 is an apocalyptic number.

It is an amenable number.

2151335545 is a deficient number, since it is larger than the sum of its proper divisors (451472663).

2151335545 is a wasteful number, since it uses less digits than its factorization.

2151335545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020.

The product of its digits is 45000, while the sum is 34.

The square root of 2151335545 is about 46382.4917937793. The cubic root of 2151335545 is about 1290.9300716137.

The spelling of 2151335545 in words is "two billion, one hundred fifty-one million, three hundred thirty-five thousand, five hundred forty-five".