513315550 has 24 divisors (see below), whose sum is σ = 1041565032. Its totient is φ = 186660000.

The previous prime is 513315521. The next prime is 513315559. The reversal of 513315550 is 55513315.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513315559) 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, 466101 + ... + 467200.

It is an arithmetic number, because the mean of its divisors is an integer number (43398543).

Almost surely, 2^513315550 is an apocalyptic number.

513315550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513315550 is an abundant number, since it is smaller than the sum of its proper divisors (528249482).

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

513315550 is a wasteful number, since it uses less digits than its factorization.

513315550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933324 (or 933319 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 513315550 is about 22656.4681713633. The cubic root of 513315550 is about 800.6845962845.

Adding to 513315550 its reverse (55513315), we get a palindrome (568828865).

The spelling of 513315550 in words is "five hundred thirteen million, three hundred fifteen thousand, five hundred fifty".