260078057 has 2 divisors, whose sum is σ = 260078058. Its totient is φ = 260078056.

The previous prime is 260078029. The next prime is 260078081. The reversal of 260078057 is 750870062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258920281 + 1157776 = 16091^2 + 1076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260078057 is a prime.

It is a super-3 number, since 3×260078057³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260078017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130039028 + 130039029.

It is an arithmetic number, because the mean of its divisors is an integer number (130039029).

Almost surely, 2^260078057 is an apocalyptic number.

It is an amenable number.

260078057 is a deficient number, since it is larger than the sum of its proper divisors (1).

260078057 is an equidigital number, since it uses as much as digits as its factorization.

260078057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 260078057 is about 16126.9357597778. The cubic root of 260078057 is about 638.3142951796.

The spelling of 260078057 in words is "two hundred sixty million, seventy-eight thousand, fifty-seven".