513981270 has 96 divisors (see below), whose sum is σ = 1466753184. Its totient is φ = 123840000.

The previous prime is 513981269. The next prime is 513981277. The reversal of 513981270 is 72189315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513981277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169770 + ... + 172770.

It is an arithmetic number, because the mean of its divisors is an integer number (15278679).

Almost surely, 2^513981270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 513981270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733376592).

513981270 is an abundant number, since it is smaller than the sum of its proper divisors (952771914).

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

513981270 is a wasteful number, since it uses less digits than its factorization.

513981270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198 (or 3195 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 513981270 is about 22671.1550213041. The cubic root of 513981270 is about 801.0305832609.

The spelling of 513981270 in words is "five hundred thirteen million, nine hundred eighty-one thousand, two hundred seventy".