245052731 has 8 divisors (see below), whose sum is σ = 305520384. Its totient is φ = 190950120.

The previous prime is 245052727. The next prime is 245052757. The reversal of 245052731 is 137250542.

It is a happy number.

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 245052731 - 2² = 245052727 is a prime.

It is a super-2 number, since 2×245052731² = 120101681941116722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245052694 and 245052703.

It is not an unprimeable number, because it can be changed into a prime (245052721) 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 7 ways as a sum of consecutive naturals, for example, 1591175 + ... + 1591328.

It is an arithmetic number, because the mean of its divisors is an integer number (38190048).

Almost surely, 2^245052731 is an apocalyptic number.

245052731 is a deficient number, since it is larger than the sum of its proper divisors (60467653).

245052731 is a wasteful number, since it uses less digits than its factorization.

245052731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182521.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 245052731 is about 15654.1601818814. The cubic root of 245052731 is about 625.7773631828. Note that the first 3 decimals are identical.

The spelling of 245052731 in words is "two hundred forty-five million, fifty-two thousand, seven hundred thirty-one".