52131551 has 2 divisors, whose sum is σ = 52131552. Its totient is φ = 52131550.

The previous prime is 52131517. The next prime is 52131587. The reversal of 52131551 is 15513125.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52131551 - 2⁶ = 52131487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52131451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26065775 + 26065776.

It is an arithmetic number, because the mean of its divisors is an integer number (26065776).

Almost surely, 2^52131551 is an apocalyptic number.

52131551 is a deficient number, since it is larger than the sum of its proper divisors (1).

52131551 is an equidigital number, since it uses as much as digits as its factorization.

52131551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 750, while the sum is 23.

The square root of 52131551 is about 7220.2182099989. The cubic root of 52131551 is about 373.5656042040.

Adding to 52131551 its reverse (15513125), we get a palindrome (67644676).

The spelling of 52131551 in words is "fifty-two million, one hundred thirty-one thousand, five hundred fifty-one".