515145357 has 12 divisors (see below), whose sum is σ = 769757820. Its totient is φ = 331587648.

The previous prime is 515145287. The next prime is 515145359. The reversal of 515145357 is 753541515.

It is a happy number.

515145357 is a `hidden beast` number, since 5 + 151 + 453 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 171636201 + 343509156 = 13101^2 + 18534^2 .

It is not a de Polignac number, because 515145357 - 2¹¹ = 515143309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515145359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 986608 + ... + 987129.

It is an arithmetic number, because the mean of its divisors is an integer number (64146485).

Almost surely, 2^515145357 is an apocalyptic number.

It is an amenable number.

515145357 is a deficient number, since it is larger than the sum of its proper divisors (254612463).

515145357 is a wasteful number, since it uses less digits than its factorization.

515145357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973772 (or 1973769 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 515145357 is about 22696.8138072285. The cubic root of 515145357 is about 801.6348635216.

The spelling of 515145357 in words is "five hundred fifteen million, one hundred forty-five thousand, three hundred fifty-seven".