5517621730 has 16 divisors (see below), whose sum is σ = 9933279480. Its totient is φ = 2206701952.

The previous prime is 5517621713. The next prime is 5517621749. The reversal of 5517621730 is 371267155.

It can be written as a sum of positive squares in 4 ways, for example, as 5428300329 + 89321401 = 73677^2 + 9451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5517621730.

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, 29286 + ... + 109054.

Almost surely, 2^5517621730 is an apocalyptic number.

5517621730 is a deficient number, since it is larger than the sum of its proper divisors (4415657750).

5517621730 is a wasteful number, since it uses less digits than its factorization.

5517621730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86693.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 5517621730 is about 74280.6955406316. The cubic root of 5517621730 is about 1767.0573350272.

Adding to 5517621730 its reverse (371267155), we get a palindrome (5888888885).

The spelling of 5517621730 in words is "five billion, five hundred seventeen million, six hundred twenty-one thousand, seven hundred thirty".