57956749 has 2 divisors, whose sum is σ = 57956750. Its totient is φ = 57956748.

The previous prime is 57956737. The next prime is 57956753. The reversal of 57956749 is 94765975.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 6375625 = 7182^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 57956749 - 2⁹ = 57956237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57956696 and 57956705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57956779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28978374 + 28978375.

It is an arithmetic number, because the mean of its divisors is an integer number (28978375).

Almost surely, 2^57956749 is an apocalyptic number.

It is an amenable number.

57956749 is a deficient number, since it is larger than the sum of its proper divisors (1).

57956749 is an equidigital number, since it uses as much as digits as its factorization.

57956749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2381400, while the sum is 52.

The square root of 57956749 is about 7612.9330090314. The cubic root of 57956749 is about 386.9914221558.

It can be divided in two parts, 5795 and 6749, that added together give a square (12544 = 112²).

The spelling of 57956749 in words is "fifty-seven million, nine hundred fifty-six thousand, seven hundred forty-nine".