53415247 has 2 divisors, whose sum is σ = 53415248. Its totient is φ = 53415246.

The previous prime is 53415233. The next prime is 53415277. The reversal of 53415247 is 74251435.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53415247 is a prime.

It is a super-2 number, since 2×53415247² = 5706377224142018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53415277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26707623 + 26707624.

It is an arithmetic number, because the mean of its divisors is an integer number (26707624).

Almost surely, 2^53415247 is an apocalyptic number.

53415247 is a deficient number, since it is larger than the sum of its proper divisors (1).

53415247 is an equidigital number, since it uses as much as digits as its factorization.

53415247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 53415247 is about 7308.5735270297. The cubic root of 53415247 is about 376.6070222560.

The spelling of 53415247 in words is "fifty-three million, four hundred fifteen thousand, two hundred forty-seven".