121535453 has 4 divisors (see below), whose sum is σ = 130884348. Its totient is φ = 112186560.

The previous prime is 121535443. The next prime is 121535483. The reversal of 121535453 is 354535121.

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 20994724 + 100540729 = 4582^2 + 10027^2 .

It is a cyclic number.

It is not a de Polignac number, because 121535453 - 2⁶ = 121535389 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 (121535443) 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, 4674428 + ... + 4674453.

It is an arithmetic number, because the mean of its divisors is an integer number (32721087).

Almost surely, 2^121535453 is an apocalyptic number.

121535453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121535453 is a deficient number, since it is larger than the sum of its proper divisors (9348895).

121535453 is an equidigital number, since it uses as much as digits as its factorization.

121535453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348894.

The product of its digits is 9000, while the sum is 29.

The square root of 121535453 is about 11024.3119059649. The cubic root of 121535453 is about 495.3372568167.

The spelling of 121535453 in words is "one hundred twenty-one million, five hundred thirty-five thousand, four hundred fifty-three".