245505499 has 8 divisors (see below), whose sum is σ = 252220752. Its totient is φ = 238824960.

The previous prime is 245505493. The next prime is 245505509. The reversal of 245505499 is 994505542.

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 245505499 - 2¹⁷ = 245374427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245505493) 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, 5992 + ... + 22954.

It is an arithmetic number, because the mean of its divisors is an integer number (31527594).

Almost surely, 2^245505499 is an apocalyptic number.

245505499 is a deficient number, since it is larger than the sum of its proper divisors (6715253).

245505499 is a wasteful number, since it uses less digits than its factorization.

245505499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17357.

The product of its (nonzero) digits is 324000, while the sum is 43.

The square root of 245505499 is about 15668.6150951512. The cubic root of 245505499 is about 626.1625287822.

Adding to 245505499 its sum of digits (43), we get a palindrome (245505542).

The spelling of 245505499 in words is "two hundred forty-five million, five hundred five thousand, four hundred ninety-nine".