52478137 has 2 divisors, whose sum is σ = 52478138. Its totient is φ = 52478136.

The previous prime is 52478131. The next prime is 52478141. The reversal of 52478137 is 73187425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52475536 + 2601 = 7244^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 52478137 - 2¹¹ = 52476089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52478096 and 52478105.

It is not a weakly prime, because it can be changed into another prime (52478131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26239068 + 26239069.

It is an arithmetic number, because the mean of its divisors is an integer number (26239069).

Almost surely, 2^52478137 is an apocalyptic number.

It is an amenable number.

52478137 is a deficient number, since it is larger than the sum of its proper divisors (1).

52478137 is an equidigital number, since it uses as much as digits as its factorization.

52478137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 52478137 is about 7244.1795256606. The cubic root of 52478137 is about 374.3916346149.

The spelling of 52478137 in words is "fifty-two million, four hundred seventy-eight thousand, one hundred thirty-seven".