245401493 has 2 divisors, whose sum is σ = 245401494. Its totient is φ = 245401492.

The previous prime is 245401483. The next prime is 245401573. The reversal of 245401493 is 394104542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241429444 + 3972049 = 15538^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 245401493 - 2²⁶ = 178292629 is a prime.

It is equal to p_13441469 and since 245401493 and 13441469 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245401433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122700746 + 122700747.

It is an arithmetic number, because the mean of its divisors is an integer number (122700747).

Almost surely, 2^245401493 is an apocalyptic number.

It is an amenable number.

245401493 is a deficient number, since it is larger than the sum of its proper divisors (1).

245401493 is an equidigital number, since it uses as much as digits as its factorization.

245401493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 245401493 is about 15665.2958159110. The cubic root of 245401493 is about 626.0740937521.

The spelling of 245401493 in words is "two hundred forty-five million, four hundred one thousand, four hundred ninety-three".