53369521 has 2 divisors, whose sum is σ = 53369522. Its totient is φ = 53369520.

The previous prime is 53369513. The next prime is 53369527. The reversal of 53369521 is 12596335.

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., 44036496 + 9333025 = 6636^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 53369521 - 2³ = 53369513 is a prime.

It is not a weakly prime, because it can be changed into another prime (53369527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26684760 + 26684761.

It is an arithmetic number, because the mean of its divisors is an integer number (26684761).

Almost surely, 2^53369521 is an apocalyptic number.

It is an amenable number.

53369521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53369521 is an equidigital number, since it uses as much as digits as its factorization.

53369521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 53369521 is about 7305.4446134373. Note that the first 3 decimals coincide. The cubic root of 53369521 is about 376.4995270498.

The spelling of 53369521 in words is "fifty-three million, three hundred sixty-nine thousand, five hundred twenty-one".