245486531 has 4 divisors (see below), whose sum is σ = 246127872. Its totient is φ = 244845192.

The previous prime is 245486497. The next prime is 245486539. The reversal of 245486531 is 135684542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245486531 - 2¹⁰ = 245485507 is a prime.

It is a super-2 number, since 2×245486531² = 120527273804827922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245486539) 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, 320096 + ... + 320861.

It is an arithmetic number, because the mean of its divisors is an integer number (61531968).

Almost surely, 2^245486531 is an apocalyptic number.

245486531 is a deficient number, since it is larger than the sum of its proper divisors (641341).

245486531 is an equidigital number, since it uses as much as digits as its factorization.

245486531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641340.

The product of its digits is 115200, while the sum is 38.

The square root of 245486531 is about 15668.0097970355. The cubic root of 245486531 is about 626.1464023862.

The spelling of 245486531 in words is "two hundred forty-five million, four hundred eighty-six thousand, five hundred thirty-one".