52140523 has 2 divisors, whose sum is σ = 52140524. Its totient is φ = 52140522.

The previous prime is 52140497. The next prime is 52140533. The reversal of 52140523 is 32504125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52140523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52140494 and 52140503.

It is not a weakly prime, because it can be changed into another prime (52140533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26070261 + 26070262.

It is an arithmetic number, because the mean of its divisors is an integer number (26070262).

Almost surely, 2^52140523 is an apocalyptic number.

52140523 is a deficient number, since it is larger than the sum of its proper divisors (1).

52140523 is an equidigital number, since it uses as much as digits as its factorization.

52140523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 52140523 is about 7220.8394941309. The cubic root of 52140523 is about 373.5870335705.

Adding to 52140523 its reverse (32504125), we get a palindrome (84644648).

The spelling of 52140523 in words is "fifty-two million, one hundred forty thousand, five hundred twenty-three".