121534453 has 2 divisors, whose sum is σ = 121534454. Its totient is φ = 121534452.

The previous prime is 121534409. The next prime is 121534471. The reversal of 121534453 is 354435121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119202724 + 2331729 = 10918^2 + 1527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121534453 is a prime.

It is a super-3 number, since 3×121534453³ (a number of 25 digits) contains 333 as substring.

It is equal to p_6924016 and since 121534453 and 6924016 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121534253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60767226 + 60767227.

It is an arithmetic number, because the mean of its divisors is an integer number (60767227).

Almost surely, 2^121534453 is an apocalyptic number.

It is an amenable number.

121534453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121534453 is an equidigital number, since it uses as much as digits as its factorization.

121534453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 121534453 is about 11024.2665515670. The cubic root of 121534453 is about 495.3358982594.

Adding to 121534453 its reverse (354435121), we get a palindrome (475969574).

The spelling of 121534453 in words is "one hundred twenty-one million, five hundred thirty-four thousand, four hundred fifty-three".