153121543 has 2 divisors, whose sum is σ = 153121544. Its totient is φ = 153121542.

The previous prime is 153121541. The next prime is 153121547. The reversal of 153121543 is 345121351.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 153121543 - 2¹ = 153121541 is a prime.

Together with 153121541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153121541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76560771 + 76560772.

It is an arithmetic number, because the mean of its divisors is an integer number (76560772).

Almost surely, 2^153121543 is an apocalyptic number.

153121543 is a deficient number, since it is larger than the sum of its proper divisors (1).

153121543 is an equidigital number, since it uses as much as digits as its factorization.

153121543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 153121543 is about 12374.2289860823. The cubic root of 153121543 is about 534.9897141878.

Adding to 153121543 its reverse (345121351), we get a palindrome (498242894).

It can be divided in two parts, 153121 and 543, that added together give a square (153664 = 392²).

The spelling of 153121543 in words is "one hundred fifty-three million, one hundred twenty-one thousand, five hundred forty-three".