57770197 has 2 divisors, whose sum is σ = 57770198. Its totient is φ = 57770196.

The previous prime is 57770179. The next prime is 57770213. The reversal of 57770197 is 79107775.

Together with previous prime (57770179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57062916 + 707281 = 7554^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 57770197 - 2¹¹ = 57768149 is a prime.

It is a super-2 number, since 2×57770197² = 6674791322837618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57770137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28885098 + 28885099.

It is an arithmetic number, because the mean of its divisors is an integer number (28885099).

Almost surely, 2^57770197 is an apocalyptic number.

It is an amenable number.

57770197 is a deficient number, since it is larger than the sum of its proper divisors (1).

57770197 is an equidigital number, since it uses as much as digits as its factorization.

57770197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108045, while the sum is 43.

The square root of 57770197 is about 7600.6708256574. The cubic root of 57770197 is about 386.5757580410.

The spelling of 57770197 in words is "fifty-seven million, seven hundred seventy thousand, one hundred ninety-seven".