53987029 has 2 divisors, whose sum is σ = 53987030. Its totient is φ = 53987028.

The previous prime is 53986987. The next prime is 53987041. The reversal of 53987029 is 92078935.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43586404 + 10400625 = 6602^2 + 3225^2 .

It is a cyclic number.

It is not a de Polignac number, because 53987029 - 2¹⁷ = 53855957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53987069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26993514 + 26993515.

It is an arithmetic number, because the mean of its divisors is an integer number (26993515).

Almost surely, 2^53987029 is an apocalyptic number.

It is an amenable number.

53987029 is a deficient number, since it is larger than the sum of its proper divisors (1).

53987029 is an equidigital number, since it uses as much as digits as its factorization.

53987029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 53987029 is about 7347.5866105817. The cubic root of 53987029 is about 377.9460487747.

The spelling of 53987029 in words is "fifty-three million, nine hundred eighty-seven thousand, twenty-nine".