1051553134421 has 4 divisors (see below), whose sum is σ = 1051599255744. Its totient is φ = 1051507013100.

The previous prime is 1051553134403. The next prime is 1051553134531. The reversal of 1051553134421 is 1244313551501.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1051553134421 is a prime.

It is a super-2 number, since 2×1051553134421² (a number of 25 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 (1051553134721) 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, 23026445 + ... + 23072066.

It is an arithmetic number, because the mean of its divisors is an integer number (262899813936).

Almost surely, 2^{1051553134421} is an apocalyptic number.

It is an amenable number.

1051553134421 is a deficient number, since it is larger than the sum of its proper divisors (46121323).

1051553134421 is an equidigital number, since it uses as much as digits as its factorization.

1051553134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46121322.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 1051553134421 its reverse (1244313551501), we get a palindrome (2295866685922).

The spelling of 1051553134421 in words is "one trillion, fifty-one billion, five hundred fifty-three million, one hundred thirty-four thousand, four hundred twenty-one".