5555513421 has 12 divisors (see below), whose sum is σ = 8026061472. Its totient is φ = 3703015176.

The previous prime is 5555513399. The next prime is 5555513423. The reversal of 5555513421 is 1243155555.

5555513421 is a `hidden beast` number, since 5 + 55 + 551 + 34 + 21 = 666.

It is not a de Polignac number, because 5555513421 - 2⁵ = 5555513389 is a prime.

It is a super-2 number, since 2×5555513421² = 61727458741822246482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555513423) 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, 1270 + ... + 105416.

It is an arithmetic number, because the mean of its divisors is an integer number (668838456).

Almost surely, 2^5555513421 is an apocalyptic number.

It is an amenable number.

5555513421 is a deficient number, since it is larger than the sum of its proper divisors (2470548051).

5555513421 is a wasteful number, since it uses less digits than its factorization.

5555513421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110080 (or 110077 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 5555513421 is about 74535.3166022658. The cubic root of 5555513421 is about 1771.0931378284.

Adding to 5555513421 its reverse (1243155555), we get a palindrome (6798668976).

The spelling of 5555513421 in words is "five billion, five hundred fifty-five million, five hundred thirteen thousand, four hundred twenty-one".