245149 has 2 divisors, whose sum is σ = 245150. Its totient is φ = 245148.

The previous prime is 245131. The next prime is 245171. The reversal of 245149 is 941542.

245149 is nontrivially palindromic in base 13.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 99225 = 382^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 245149 - 2⁹ = 244637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245129) 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, 122574 + 122575.

It is an arithmetic number, because the mean of its divisors is an integer number (122575).

2²⁴⁵¹⁴⁹ is an apocalyptic number.

It is an amenable number.

245149 is a deficient number, since it is larger than the sum of its proper divisors (1).

245149 is an equidigital number, since it uses as much as digits as its factorization.

245149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 245149 is about 495.1252366826. The cubic root of 245149 is about 62.5859298030.

It can be divided in two parts, 2451 and 49, that added together give a square (2500 = 50²).

The spelling of 245149 in words is "two hundred forty-five thousand, one hundred forty-nine".