290500057 has 2 divisors, whose sum is σ = 290500058. Its totient is φ = 290500056.

The previous prime is 290500037. The next prime is 290500073. The reversal of 290500057 is 750005092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227074761 + 63425296 = 15069^2 + 7964^2 .

It is a cyclic number.

It is not a de Polignac number, because 290500057 - 2¹¹ = 290498009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290499998 and 290500034.

It is not a weakly prime, because it can be changed into another prime (290500027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145250028 + 145250029.

It is an arithmetic number, because the mean of its divisors is an integer number (145250029).

Almost surely, 2^290500057 is an apocalyptic number.

It is an amenable number.

290500057 is a deficient number, since it is larger than the sum of its proper divisors (1).

290500057 is an equidigital number, since it uses as much as digits as its factorization.

290500057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 290500057 is about 17044.0622211960. The cubic root of 290500057 is about 662.2908280909.

The spelling of 290500057 in words is "two hundred ninety million, five hundred thousand, fifty-seven".