245397877 has 2 divisors, whose sum is σ = 245397878. Its totient is φ = 245397876.

The previous prime is 245397821. The next prime is 245397959. The reversal of 245397877 is 778793542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149964516 + 95433361 = 12246^2 + 9769^2 .

It is a cyclic number.

It is not a de Polignac number, because 245397877 - 2¹⁹ = 244873589 is a prime.

It is a super-3 number, since 3×245397877³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245397077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122698938 + 122698939.

It is an arithmetic number, because the mean of its divisors is an integer number (122698939).

Almost surely, 2^245397877 is an apocalyptic number.

It is an amenable number.

245397877 is a deficient number, since it is larger than the sum of its proper divisors (1).

245397877 is an equidigital number, since it uses as much as digits as its factorization.

245397877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 52.

The square root of 245397877 is about 15665.1804011317. The cubic root of 245397877 is about 626.0710186621.

The spelling of 245397877 in words is "two hundred forty-five million, three hundred ninety-seven thousand, eight hundred seventy-seven".