10552542421 has 4 divisors (see below), whose sum is σ = 10553026572. Its totient is φ = 10552058272.

The previous prime is 10552542419. The next prime is 10552542431. The reversal of 10552542421 is 12424525501.

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 9226563025 + 1325979396 = 96055^2 + 36414^2 .

It is a cyclic number.

It is not a de Polignac number, because 10552542421 - 2¹ = 10552542419 is a prime.

It is a super-2 number, since 2×10552542421² (a number of 21 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 (10552542431) 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, 207760 + ... + 253513.

It is an arithmetic number, because the mean of its divisors is an integer number (2638256643).

Almost surely, 2^10552542421 is an apocalyptic number.

It is an amenable number.

10552542421 is a deficient number, since it is larger than the sum of its proper divisors (484151).

10552542421 is an equidigital number, since it uses as much as digits as its factorization.

10552542421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484150.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 10552542421 in words is "ten billion, five hundred fifty-two million, five hundred forty-two thousand, four hundred twenty-one".