245387775 has 24 divisors (see below), whose sum is σ = 429575184. Its totient is φ = 123174400.

The previous prime is 245387773. The next prime is 245387777. The reversal of 245387775 is 577783542.

It is an interprime number because it is at equal distance from previous prime (245387773) and next prime (245387777).

It is not a de Polignac number, because 245387775 - 2¹ = 245387773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245387771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94956 + ... + 97505.

It is an arithmetic number, because the mean of its divisors is an integer number (17898966).

Almost surely, 2^245387775 is an apocalyptic number.

245387775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

245387775 is a deficient number, since it is larger than the sum of its proper divisors (184187409).

245387775 is a wasteful number, since it uses less digits than its factorization.

245387775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192491 (or 192486 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 48.

The square root of 245387775 is about 15664.8579629692. The cubic root of 245387775 is about 626.0624276394.

The spelling of 245387775 in words is "two hundred forty-five million, three hundred eighty-seven thousand, seven hundred seventy-five".