53087869 has 2 divisors, whose sum is σ = 53087870. Its totient is φ = 53087868.

The previous prime is 53087857. The next prime is 53087897. The reversal of 53087869 is 96878035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 14175225 = 6238^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 53087869 - 2¹¹ = 53085821 is a prime.

It is a super-2 number, since 2×53087869² = 5636643669922322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53087899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26543934 + 26543935.

It is an arithmetic number, because the mean of its divisors is an integer number (26543935).

Almost surely, 2^53087869 is an apocalyptic number.

It is an amenable number.

53087869 is a deficient number, since it is larger than the sum of its proper divisors (1).

53087869 is an equidigital number, since it uses as much as digits as its factorization.

53087869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 53087869 is about 7286.1422577383. The cubic root of 53087869 is about 375.8360463890.

It can be divided in two parts, 53087 and 869, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 53087869 in words is "fifty-three million, eighty-seven thousand, eight hundred sixty-nine".