245540523 has 4 divisors (see below), whose sum is σ = 327387368. Its totient is φ = 163693680.

The previous prime is 245540521. The next prime is 245540531. The reversal of 245540523 is 325045542.

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

It is not a de Polignac number, because 245540523 - 2¹ = 245540521 is a prime.

It is a super-2 number, since 2×245540523² = 120580296870227058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245540521) 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, 40923418 + ... + 40923423.

It is an arithmetic number, because the mean of its divisors is an integer number (81846842).

Almost surely, 2^245540523 is an apocalyptic number.

245540523 is a deficient number, since it is larger than the sum of its proper divisors (81846845).

245540523 is an equidigital number, since it uses as much as digits as its factorization.

245540523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81846844.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 245540523 is about 15669.7327035275. The cubic root of 245540523 is about 626.1923036395.

The spelling of 245540523 in words is "two hundred forty-five million, five hundred forty thousand, five hundred twenty-three".