258731401 has 2 divisors, whose sum is σ = 258731402. Its totient is φ = 258731400.

The previous prime is 258731357. The next prime is 258731411. The reversal of 258731401 is 104137852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240250000 + 18481401 = 15500^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 258731401 - 2²¹ = 256634249 is a prime.

It is not a weakly prime, because it can be changed into another prime (258731411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129365700 + 129365701.

It is an arithmetic number, because the mean of its divisors is an integer number (129365701).

Almost surely, 2^258731401 is an apocalyptic number.

It is an amenable number.

258731401 is a deficient number, since it is larger than the sum of its proper divisors (1).

258731401 is an equidigital number, since it uses as much as digits as its factorization.

258731401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 258731401 is about 16085.1298098585. The cubic root of 258731401 is about 637.2106807636.

The spelling of 258731401 in words is "two hundred fifty-eight million, seven hundred thirty-one thousand, four hundred one".