53306497 has 4 divisors (see below), whose sum is σ = 54180436. Its totient is φ = 52432560.

The previous prime is 53306471. The next prime is 53306503. The reversal of 53306497 is 79460335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79460335 = 5 ⋅15892067.

It can be written as a sum of positive squares in 2 ways, for example, as 29257281 + 24049216 = 5409^2 + 4904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53306497 is a prime.

It is a super-2 number, since 2×53306497² = 5683165244822018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53306417) 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 in 3 ways as a sum of consecutive naturals, for example, 436878 + ... + 436999.

It is an arithmetic number, because the mean of its divisors is an integer number (13545109).

Almost surely, 2^53306497 is an apocalyptic number.

It is an amenable number.

53306497 is a deficient number, since it is larger than the sum of its proper divisors (873939).

53306497 is an equidigital number, since it uses as much as digits as its factorization.

53306497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873938.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 53306497 is about 7301.1298440721. The cubic root of 53306497 is about 376.3512660686.

The spelling of 53306497 in words is "fifty-three million, three hundred six thousand, four hundred ninety-seven".