245431673 has 2 divisors, whose sum is σ = 245431674. Its totient is φ = 245431672.

The previous prime is 245431661. The next prime is 245431679. The reversal of 245431673 is 376134542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124255609 + 121176064 = 11147^2 + 11008^2 .

It is a cyclic number.

It is not a de Polignac number, because 245431673 - 2¹⁶ = 245366137 is a prime.

It is a super-2 number, since 2×245431673² = 120473412223157858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245431679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122715836 + 122715837.

It is an arithmetic number, because the mean of its divisors is an integer number (122715837).

Almost surely, 2^245431673 is an apocalyptic number.

It is an amenable number.

245431673 is a deficient number, since it is larger than the sum of its proper divisors (1).

245431673 is an equidigital number, since it uses as much as digits as its factorization.

245431673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 245431673 is about 15666.2590620735. The cubic root of 245431673 is about 626.0997580100.

The spelling of 245431673 in words is "two hundred forty-five million, four hundred thirty-one thousand, six hundred seventy-three".