53985157 has 2 divisors, whose sum is σ = 53985158. Its totient is φ = 53985156.

The previous prime is 53985143. The next prime is 53985181. The reversal of 53985157 is 75158935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53012961 + 972196 = 7281^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 53985157 - 2¹⁵ = 53952389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53985457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26992578 + 26992579.

It is an arithmetic number, because the mean of its divisors is an integer number (26992579).

Almost surely, 2^53985157 is an apocalyptic number.

It is an amenable number.

53985157 is a deficient number, since it is larger than the sum of its proper divisors (1).

53985157 is an equidigital number, since it uses as much as digits as its factorization.

53985157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 43.

The square root of 53985157 is about 7347.4592207102. The cubic root of 53985157 is about 377.9416802984.

Subtracting 53985157 from its reverse (75158935), we obtain a triangular number (21173778 = T₆₅₀₇).

The spelling of 53985157 in words is "fifty-three million, nine hundred eighty-five thousand, one hundred fifty-seven".