553455251144021 has 4 divisors (see below), whose sum is σ = 553455459008844. Its totient is φ = 553455043279200.

The previous prime is 553455251143973. The next prime is 553455251144057. The reversal of 553455251144021 is 120441152554355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75673731874225 + 477781519269796 = 8699065^2 + 21858214^2 .

It is a cyclic number.

It is not a de Polignac number, because 553455251144021 - 2⁴² = 549057204632917 is a prime.

It is a super-3 number, since 3×553455251144021³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553455251144221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99886040 + ... + 105281201.

It is an arithmetic number, because the mean of its divisors is an integer number (138363864752211).

Almost surely, 2^{553455251144021} is an apocalyptic number.

It is an amenable number.

553455251144021 is a deficient number, since it is larger than the sum of its proper divisors (207864823).

553455251144021 is a wasteful number, since it uses less digits than its factorization.

553455251144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207864822.

The product of its (nonzero) digits is 2400000, while the sum is 47.

The spelling of 553455251144021 in words is "five hundred fifty-three trillion, four hundred fifty-five billion, two hundred fifty-one million, one hundred forty-four thousand, twenty-one".