53857537 has 2 divisors, whose sum is σ = 53857538. Its totient is φ = 53857536.

The previous prime is 53857499. The next prime is 53857541. The reversal of 53857537 is 73575835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46840336 + 7017201 = 6844^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 53857537 - 2¹⁹ = 53333249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53857493 and 53857502.

It is not a weakly prime, because it can be changed into another prime (53857337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26928768 + 26928769.

It is an arithmetic number, because the mean of its divisors is an integer number (26928769).

Almost surely, 2^53857537 is an apocalyptic number.

It is an amenable number.

53857537 is a deficient number, since it is larger than the sum of its proper divisors (1).

53857537 is an equidigital number, since it uses as much as digits as its factorization.

53857537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 441000, while the sum is 43.

The square root of 53857537 is about 7338.7694472575. The cubic root of 53857537 is about 377.6436293946.

The spelling of 53857537 in words is "fifty-three million, eight hundred fifty-seven thousand, five hundred thirty-seven".