515151012 has 24 divisors (see below), whose sum is σ = 1243468800. Its totient is φ = 165795616.

The previous prime is 515151001. The next prime is 515151023. The reversal of 515151012 is 210151515.

It is an interprime number because it is at equal distance from previous prime (515151001) and next prime (515151023).

It is a self number, because there is not a number n which added to its sum of digits gives 515151012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739812 + ... + 740507.

It is an arithmetic number, because the mean of its divisors is an integer number (51811200).

Almost surely, 2^515151012 is an apocalyptic number.

It is an amenable number.

515151012 is an abundant number, since it is smaller than the sum of its proper divisors (728317788).

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

515151012 is a wasteful number, since it uses less digits than its factorization.

515151012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480355 (or 1480353 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 515151012 is about 22696.9383838438. The cubic root of 515151012 is about 801.6377968222.

The spelling of 515151012 in words is "five hundred fifteen million, one hundred fifty-one thousand, twelve".