54145021523 has 2 divisors, whose sum is σ = 54145021524. Its totient is φ = 54145021522.

The previous prime is 54145021493. The next prime is 54145021537. The reversal of 54145021523 is 32512054145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54145021523 - 2⁶ = 54145021459 is a prime.

It is a super-2 number, since 2×54145021523² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54145021523.

It is not a weakly prime, because it can be changed into another prime (54145021583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27072510761 + 27072510762.

It is an arithmetic number, because the mean of its divisors is an integer number (27072510762).

Almost surely, 2^54145021523 is an apocalyptic number.

54145021523 is a deficient number, since it is larger than the sum of its proper divisors (1).

54145021523 is an equidigital number, since it uses as much as digits as its factorization.

54145021523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 54145021523 its reverse (32512054145), we get a palindrome (86657075668).

The spelling of 54145021523 in words is "fifty-four billion, one hundred forty-five million, twenty-one thousand, five hundred twenty-three".