554952100021 has 4 divisors (see below), whose sum is σ = 605402290944. Its totient is φ = 504501909100.

The previous prime is 554952099931. The next prime is 554952100037. The reversal of 554952100021 is 120001259455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 554952100021 - 2²¹ = 554950002869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 554952100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554952100061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25225095445 + ... + 25225095466.

It is an arithmetic number, because the mean of its divisors is an integer number (151350572736).

Almost surely, 2^554952100021 is an apocalyptic number.

It is an amenable number.

554952100021 is a deficient number, since it is larger than the sum of its proper divisors (50450190923).

554952100021 is a wasteful number, since it uses less digits than its factorization.

554952100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50450190922.

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 554952100021 its reverse (120001259455), we get a palindrome (674953359476).

The spelling of 554952100021 in words is "five hundred fifty-four billion, nine hundred fifty-two million, one hundred thousand, twenty-one".