57543247 has 2 divisors, whose sum is σ = 57543248. Its totient is φ = 57543246.

The previous prime is 57543197. The next prime is 57543253. The reversal of 57543247 is 74234575.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57543247 - 2⁷ = 57543119 is a prime.

It is a super-2 number, since 2×57543247² = 6622450550606018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57543257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28771623 + 28771624.

It is an arithmetic number, because the mean of its divisors is an integer number (28771624).

Almost surely, 2^57543247 is an apocalyptic number.

57543247 is a deficient number, since it is larger than the sum of its proper divisors (1).

57543247 is an equidigital number, since it uses as much as digits as its factorization.

57543247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 37.

The square root of 57543247 is about 7585.7265307945. The cubic root of 57543247 is about 386.0688732285.

The spelling of 57543247 in words is "fifty-seven million, five hundred forty-three thousand, two hundred forty-seven".