57432371 has 2 divisors, whose sum is σ = 57432372. Its totient is φ = 57432370.

The previous prime is 57432359. The next prime is 57432373. The reversal of 57432371 is 17323475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57432371 - 2¹⁰ = 57431347 is a prime.

Together with 57432373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57432373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28716185 + 28716186.

It is an arithmetic number, because the mean of its divisors is an integer number (28716186).

Almost surely, 2^57432371 is an apocalyptic number.

57432371 is a deficient number, since it is larger than the sum of its proper divisors (1).

57432371 is an equidigital number, since it uses as much as digits as its factorization.

57432371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 57432371 is about 7578.4148078605. The cubic root of 57432371 is about 385.8207508903.

Adding to 57432371 its sum of digits (32), we get a triangular number (57432403 = T₁₀₇₁₇).

The spelling of 57432371 in words is "fifty-seven million, four hundred thirty-two thousand, three hundred seventy-one".