515474090 has 16 divisors (see below), whose sum is σ = 928312488. Its totient is φ = 206087616.

The previous prime is 515474059. The next prime is 515474093. The reversal of 515474090 is 90474515.

It can be written as a sum of positive squares in 4 ways, for example, as 430521001 + 84953089 = 20749^2 + 9217^2 .

It is a super-2 number, since 2×515474090² = 531427074922656200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 515474090.

It is not an unprimeable number, because it can be changed into a prime (515474093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10484 + ... + 33776.

Almost surely, 2^515474090 is an apocalyptic number.

515474090 is a deficient number, since it is larger than the sum of its proper divisors (412838398).

515474090 is a wasteful number, since it uses less digits than its factorization.

515474090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25513.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 515474090 is about 22704.0544837260. The cubic root of 515474090 is about 801.8053447234.

The spelling of 515474090 in words is "five hundred fifteen million, four hundred seventy-four thousand, ninety".