553012442355421 has 4 divisors (see below), whose sum is σ = 553013006293692. Its totient is φ = 553011878417152.

The previous prime is 553012442355409. The next prime is 553012442355463. The reversal of 553012442355421 is 124553244210355.

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 386893596891321 + 166118845464100 = 19669611^2 + 12888710^2 .

It is a cyclic number.

It is not a de Polignac number, because 553012442355421 - 2⁹ = 553012442354909 is a prime.

It is a super-2 number, since 2×553012442355421² (a number of 30 digits) contains 22 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 (553012442353421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280495630 + ... + 282460303.

It is an arithmetic number, because the mean of its divisors is an integer number (138253251573423).

Almost surely, 2^{553012442355421} is an apocalyptic number.

It is an amenable number.

553012442355421 is a deficient number, since it is larger than the sum of its proper divisors (563938271).

553012442355421 is an equidigital number, since it uses as much as digits as its factorization.

553012442355421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563938270.

The product of its (nonzero) digits is 2880000, while the sum is 46.

Adding to 553012442355421 its reverse (124553244210355), we get a palindrome (677565686565776).

The spelling of 553012442355421 in words is "five hundred fifty-three trillion, twelve billion, four hundred forty-two million, three hundred fifty-five thousand, four hundred twenty-one".