57161149 has 2 divisors, whose sum is σ = 57161150. Its totient is φ = 57161148.

The previous prime is 57161119. The next prime is 57161173. The reversal of 57161149 is 94116175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57108249 + 52900 = 7557^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 57161149 - 2¹¹ = 57159101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57161119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28580574 + 28580575.

It is an arithmetic number, because the mean of its divisors is an integer number (28580575).

Almost surely, 2^57161149 is an apocalyptic number.

It is an amenable number.

57161149 is a deficient number, since it is larger than the sum of its proper divisors (1).

57161149 is an equidigital number, since it uses as much as digits as its factorization.

57161149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 57161149 is about 7560.4992560016. The cubic root of 57161149 is about 385.2124514730.

The spelling of 57161149 in words is "fifty-seven million, one hundred sixty-one thousand, one hundred forty-nine".