57481751 has 2 divisors, whose sum is σ = 57481752. Its totient is φ = 57481750.

The previous prime is 57481727. The next prime is 57481763. The reversal of 57481751 is 15718475.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57481751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57481771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28740875 + 28740876.

It is an arithmetic number, because the mean of its divisors is an integer number (28740876).

Almost surely, 2^57481751 is an apocalyptic number.

57481751 is a deficient number, since it is larger than the sum of its proper divisors (1).

57481751 is an equidigital number, since it uses as much as digits as its factorization.

57481751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 38.

The square root of 57481751 is about 7581.6720451362. The cubic root of 57481751 is about 385.9312946524.

The spelling of 57481751 in words is "fifty-seven million, four hundred eighty-one thousand, seven hundred fifty-one".