53487953 has 2 divisors, whose sum is σ = 53487954. Its totient is φ = 53487952.

The previous prime is 53487937. The next prime is 53487991. The reversal of 53487953 is 35978435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32069569 + 21418384 = 5663^2 + 4628^2 .

It is a cyclic number.

It is not a de Polignac number, because 53487953 - 2⁴ = 53487937 is a prime.

It is a super-2 number, since 2×53487953² = 5721922232260418, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53487923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26743976 + 26743977.

It is an arithmetic number, because the mean of its divisors is an integer number (26743977).

Almost surely, 2^53487953 is an apocalyptic number.

It is an amenable number.

53487953 is a deficient number, since it is larger than the sum of its proper divisors (1).

53487953 is an equidigital number, since it uses as much as digits as its factorization.

53487953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 53487953 is about 7313.5458568331. The cubic root of 53487953 is about 376.7778172856. Note that the first 3 decimals are identical.

The spelling of 53487953 in words is "fifty-three million, four hundred eighty-seven thousand, nine hundred fifty-three".