1421154522553 has 4 divisors (see below), whose sum is σ = 1421164759680. Its totient is φ = 1421144285428.

The previous prime is 1421154522547. The next prime is 1421154522583. The reversal of 1421154522553 is 3552254511241.

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 1421154522553 - 2²⁹ = 1420617651641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421154522523) 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, 4907425 + ... + 5188942.

It is an arithmetic number, because the mean of its divisors is an integer number (355291189920).

Almost surely, 2^{1421154522553} is an apocalyptic number.

It is an amenable number.

1421154522553 is a deficient number, since it is larger than the sum of its proper divisors (10237127).

1421154522553 is a wasteful number, since it uses less digits than its factorization.

1421154522553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237126.

The product of its digits is 240000, while the sum is 40.

The spelling of 1421154522553 in words is "one trillion, four hundred twenty-one billion, one hundred fifty-four million, five hundred twenty-two thousand, five hundred fifty-three".