245417540 has 24 divisors (see below), whose sum is σ = 515675160. Its totient is φ = 98110208.

The previous prime is 245417519. The next prime is 245417561. The reversal of 245417540 is 45714542.

It is an interprime number because it is at equal distance from previous prime (245417519) and next prime (245417561).

It can be written as a sum of positive squares in 4 ways, for example, as 2119936 + 243297604 = 1456^2 + 15598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245417497 and 245417506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57314 + ... + 61446.

It is an arithmetic number, because the mean of its divisors is an integer number (21486465).

Almost surely, 2^245417540 is an apocalyptic number.

245417540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245417540 is an abundant number, since it is smaller than the sum of its proper divisors (270257620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245417540 is a wasteful number, since it uses less digits than its factorization.

245417540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111 (or 7109 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 245417540 is about 15665.8079906528. The cubic root of 245417540 is about 626.0877399500.

The spelling of 245417540 in words is "two hundred forty-five million, four hundred seventeen thousand, five hundred forty".