505000005490 has 32 divisors (see below), whose sum is σ = 910491609456. Its totient is φ = 201668693760.

The previous prime is 505000005481. The next prime is 505000005511. The reversal of 505000005490 is 94500000505.

It can be written as a sum of positive squares in 8 ways, for example, as 501613813009 + 3386192481 = 708247^2 + 58191^2 .

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, 35624044 + ... + 35638216.

Almost surely, 2^505000005490 is an apocalyptic number.

505000005490 is a deficient number, since it is larger than the sum of its proper divisors (405491603966).

505000005490 is a wasteful number, since it uses less digits than its factorization.

505000005490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19774.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 505000005490 its reverse (94500000505), we get a palindrome (599500005995).

The spelling of 505000005490 in words is "five hundred five billion, five thousand, four hundred ninety".