53287669 has 2 divisors, whose sum is σ = 53287670. Its totient is φ = 53287668.

The previous prime is 53287651. The next prime is 53287691. The reversal of 53287669 is 96678235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39225169 + 14062500 = 6263^2 + 3750^2 .

It is a cyclic number.

It is not a de Polignac number, because 53287669 - 2⁷ = 53287541 is a prime.

It is a super-2 number, since 2×53287669² = 5679151334907122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53287649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26643834 + 26643835.

It is an arithmetic number, because the mean of its divisors is an integer number (26643835).

Almost surely, 2^53287669 is an apocalyptic number.

It is an amenable number.

53287669 is a deficient number, since it is larger than the sum of its proper divisors (1).

53287669 is an equidigital number, since it uses as much as digits as its factorization.

53287669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 53287669 is about 7299.8403407198. The cubic root of 53287669 is about 376.3069514200.

It can be divided in two parts, 53287 and 669, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 53287669 in words is "fifty-three million, two hundred eighty-seven thousand, six hundred sixty-nine".