245535987 has 4 divisors (see below), whose sum is σ = 327381320. Its totient is φ = 163690656.

The previous prime is 245535973. The next prime is 245536009. The reversal of 245535987 is 789535542.

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

It is not a de Polignac number, because 245535987 - 2⁶ = 245535923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245535967) 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, 40922662 + ... + 40922667.

It is an arithmetic number, because the mean of its divisors is an integer number (81845330).

Almost surely, 2^245535987 is an apocalyptic number.

245535987 is a deficient number, since it is larger than the sum of its proper divisors (81845333).

245535987 is an equidigital number, since it uses as much as digits as its factorization.

245535987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81845332.

The product of its digits is 1512000, while the sum is 48.

The square root of 245535987 is about 15669.5879652274. The cubic root of 245535987 is about 626.1884476219.

The spelling of 245535987 in words is "two hundred forty-five million, five hundred thirty-five thousand, nine hundred eighty-seven".