515100040 has 64 divisors (see below), whose sum is σ = 1426440960. Its totient is φ = 163019520.

The previous prime is 515100023. The next prime is 515100073. The reversal of 515100040 is 40001515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 515099987 and 515100023.

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, 67116 + ... + 74395.

It is an arithmetic number, because the mean of its divisors is an integer number (22288140).

Almost surely, 2^515100040 is an apocalyptic number.

It is an amenable number.

515100040 is an abundant number, since it is smaller than the sum of its proper divisors (911340920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515100040 is a wasteful number, since it uses less digits than its factorization.

515100040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141542 (or 141538 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 515100040 is about 22695.8154733422. The cubic root of 515100040 is about 801.6113564008.

Adding to 515100040 its reverse (40001515), we get a palindrome (555101555).

The spelling of 515100040 in words is "five hundred fifteen million, one hundred thousand, forty".