515016145 has 32 divisors (see below), whose sum is σ = 719808768. Its totient is φ = 346472448.

The previous prime is 515016127. The next prime is 515016197. The reversal of 515016145 is 541610515.

It is a happy number.

It is not a de Polignac number, because 515016145 - 2¹³ = 515007953 is a prime.

It is a super-2 number, since 2×515016145² = 530483259221322050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422577 + ... + 423793.

It is an arithmetic number, because the mean of its divisors is an integer number (22494024).

Almost surely, 2^515016145 is an apocalyptic number.

It is an amenable number.

515016145 is a deficient number, since it is larger than the sum of its proper divisors (204792623).

515016145 is a wasteful number, since it uses less digits than its factorization.

515016145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 515016145 is about 22693.9671498837. The cubic root of 515016145 is about 801.5678342168.

The spelling of 515016145 in words is "five hundred fifteen million, sixteen thousand, one hundred forty-five".