245199505 has 8 divisors (see below), whose sum is σ = 295181352. Its totient is φ = 195531648.

The previous prime is 245199473. The next prime is 245199509. The reversal of 245199505 is 505991542.

It can be written as a sum of positive squares in 4 ways, for example, as 20439441 + 224760064 = 4521^2 + 14992^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245199505 - 2⁵ = 245199473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245199509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76774 + ... + 79903.

It is an arithmetic number, because the mean of its divisors is an integer number (36897669).

Almost surely, 2^245199505 is an apocalyptic number.

It is an amenable number.

245199505 is a deficient number, since it is larger than the sum of its proper divisors (49981847).

245199505 is a wasteful number, since it uses less digits than its factorization.

245199505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156995.

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 245199505 is about 15658.8474990978. The cubic root of 245199505 is about 625.9022744146.

The spelling of 245199505 in words is "two hundred forty-five million, one hundred ninety-nine thousand, five hundred five".