511897480 has 16 divisors (see below), whose sum is σ = 1151769420. Its totient is φ = 204758976.

The previous prime is 511897469. The next prime is 511897541. The reversal of 511897480 is 84798115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 498807556 + 13089924 = 22334^2 + 3618^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6398679 + ... + 6398758.

Almost surely, 2^511897480 is an apocalyptic number.

It is an amenable number.

511897480 is an abundant number, since it is smaller than the sum of its proper divisors (639871940).

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

511897480 is a wasteful number, since it uses less digits than its factorization.

511897480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797448 (or 12797444 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 511897480 is about 22625.1514912055. The cubic root of 511897480 is about 799.9466006024.

The spelling of 511897480 in words is "five hundred eleven million, eight hundred ninety-seven thousand, four hundred eighty".