245855407 has 4 divisors (see below), whose sum is σ = 280977616. Its totient is φ = 210733200.

The previous prime is 245855369. The next prime is 245855431. The reversal of 245855407 is 704558542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704558542 = 2 ⋅352279271.

It is a cyclic number.

It is not a de Polignac number, because 245855407 - 2⁷ = 245855279 is a prime.

It is a super-2 number, since 2×245855407² = 120889762302271298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245855407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245855447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17561094 + ... + 17561107.

It is an arithmetic number, because the mean of its divisors is an integer number (70244404).

Almost surely, 2^245855407 is an apocalyptic number.

245855407 is a deficient number, since it is larger than the sum of its proper divisors (35122209).

245855407 is an equidigital number, since it uses as much as digits as its factorization.

245855407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35122208.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 245855407 is about 15679.7770073429. Note that the first 3 decimals coincide. The cubic root of 245855407 is about 626.4598680415.

It can be divided in two parts, 24585 and 5407, that added together give a palindrome (29992).

The spelling of 245855407 in words is "two hundred forty-five million, eight hundred fifty-five thousand, four hundred seven".