5545551021 has 8 divisors (see below), whose sum is σ = 7395017760. Its totient is φ = 3696559152.

The previous prime is 5545551001. The next prime is 5545551023. The reversal of 5545551021 is 1201555455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5545551021 - 2⁷ = 5545550893 is a prime.

It is a super-2 number, since 2×5545551021² = 61506272253028284882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5545551023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90510 + ... + 138863.

It is an arithmetic number, because the mean of its divisors is an integer number (924377220).

Almost surely, 2^5545551021 is an apocalyptic number.

It is an amenable number.

5545551021 is a deficient number, since it is larger than the sum of its proper divisors (1849466739).

5545551021 is a wasteful number, since it uses less digits than its factorization.

5545551021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237435.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 5545551021 is about 74468.4565504080. The cubic root of 5545551021 is about 1770.0338360540.

The spelling of 5545551021 in words is "five billion, five hundred forty-five million, five hundred fifty-one thousand, twenty-one".