515050145 has 16 divisors (see below), whose sum is σ = 629758800. Its totient is φ = 404275200.

The previous prime is 515050141. The next prime is 515050147. The reversal of 515050145 is 541050515.

It can be written as a sum of positive squares in 8 ways, for example, as 58629649 + 456420496 = 7657^2 + 21364^2 .

It is not a de Polignac number, because 515050145 - 2² = 515050141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515050141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135065 + ... + 138825.

It is an arithmetic number, because the mean of its divisors is an integer number (39359925).

Almost surely, 2^515050145 is an apocalyptic number.

It is an amenable number.

515050145 is a deficient number, since it is larger than the sum of its proper divisors (114708655).

515050145 is a wasteful number, since it uses less digits than its factorization.

515050145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 515050145 is about 22694.7162352826. The cubic root of 515050145 is about 801.5854729561.

The spelling of 515050145 in words is "five hundred fifteen million, fifty thousand, one hundred forty-five".