1421522453 has 16 divisors (see below), whose sum is σ = 1602542592. Its totient is φ = 1251936000.

The previous prime is 1421522413. The next prime is 1421522461. The reversal of 1421522453 is 3542251241.

It is a cyclic number.

It is not a de Polignac number, because 1421522453 - 2¹⁴ = 1421506069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421522413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3773 + ... + 53453.

It is an arithmetic number, because the mean of its divisors is an integer number (100158912).

Almost surely, 2^1421522453 is an apocalyptic number.

1421522453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1421522453 is a deficient number, since it is larger than the sum of its proper divisors (181020139).

1421522453 is a wasteful number, since it uses less digits than its factorization.

1421522453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49796.

The product of its digits is 9600, while the sum is 29.

The square root of 1421522453 is about 37703.0828049909. The cubic root of 1421522453 is about 1124.3924167422.

Adding to 1421522453 its reverse (3542251241), we get a palindrome (4963773694).

The spelling of 1421522453 in words is "one billion, four hundred twenty-one million, five hundred twenty-two thousand, four hundred fifty-three".