53507393 has 2 divisors, whose sum is σ = 53507394. Its totient is φ = 53507392.

The previous prime is 53507371. The next prime is 53507413. The reversal of 53507393 is 39370535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50367409 + 3139984 = 7097^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 53507393 - 2⁶ = 53507329 is a prime.

It is a super-2 number, since 2×53507393² = 5726082211312898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53507593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26753696 + 26753697.

It is an arithmetic number, because the mean of its divisors is an integer number (26753697).

Almost surely, 2^53507393 is an apocalyptic number.

It is an amenable number.

53507393 is a deficient number, since it is larger than the sum of its proper divisors (1).

53507393 is an equidigital number, since it uses as much as digits as its factorization.

53507393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42525, while the sum is 35.

The square root of 53507393 is about 7314.8747767819. The cubic root of 53507393 is about 376.8234579279.

The spelling of 53507393 in words is "fifty-three million, five hundred seven thousand, three hundred ninety-three".