5455100021 has 16 divisors (see below), whose sum is σ = 6321047040. Its totient is φ = 4610960640.

The previous prime is 5455099997. The next prime is 5455100033. The reversal of 5455100021 is 1200015545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5455100021 - 2¹⁸ = 5454837877 is a prime.

It is a super-2 number, since 2×5455100021² = 59516232478228400882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5455100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5455100221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481595 + ... + 492791.

It is an arithmetic number, because the mean of its divisors is an integer number (395065440).

Almost surely, 2^5455100021 is an apocalyptic number.

It is an amenable number.

5455100021 is a deficient number, since it is larger than the sum of its proper divisors (865947019).

5455100021 is a wasteful number, since it uses less digits than its factorization.

5455100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12164.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 5455100021 is about 73858.6489248213. The cubic root of 5455100021 is about 1760.3576258676.

Adding to 5455100021 its reverse (1200015545), we get a palindrome (6655115566).

The spelling of 5455100021 in words is "five billion, four hundred fifty-five million, one hundred thousand, twenty-one".