12151523 has 2 divisors, whose sum is σ = 12151524. Its totient is φ = 12151522.

The previous prime is 12151511. The next prime is 12151553. The reversal of 12151523 is 32515121.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32515121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12151523 - 2⁶ = 12151459 is a prime.

It is a super-2 number, since 2×12151523² = 295319022439058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12151495 and 12151504.

It is not a weakly prime, because it can be changed into another prime (12151553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6075761 + 6075762.

It is an arithmetic number, because the mean of its divisors is an integer number (6075762).

Almost surely, 2^12151523 is an apocalyptic number.

12151523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12151523 is an equidigital number, since it uses as much as digits as its factorization.

12151523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 20.

The square root of 12151523 is about 3485.9034696905. The cubic root of 12151523 is about 229.9024349897.

Adding to 12151523 its reverse (32515121), we get a palindrome (44666644).

The spelling of 12151523 in words is "twelve million, one hundred fifty-one thousand, five hundred twenty-three".