245214861 has 4 divisors (see below), whose sum is σ = 326953152. Its totient is φ = 163476572.

The previous prime is 245214857. The next prime is 245214863. The reversal of 245214861 is 168412542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245214861 - 2² = 245214857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245214863) 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 in 3 ways as a sum of consecutive naturals, for example, 40869141 + ... + 40869146.

It is an arithmetic number, because the mean of its divisors is an integer number (81738288).

Almost surely, 2^245214861 is an apocalyptic number.

It is an amenable number.

245214861 is a deficient number, since it is larger than the sum of its proper divisors (81738291).

245214861 is an equidigital number, since it uses as much as digits as its factorization.

245214861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81738290.

The product of its digits is 15360, while the sum is 33.

The square root of 245214861 is about 15659.3378212490. The cubic root of 245214861 is about 625.9153401760.

The spelling of 245214861 in words is "two hundred forty-five million, two hundred fourteen thousand, eight hundred sixty-one".