245520071 has 12 divisors (see below), whose sum is σ = 262432800. Its totient is φ = 229627008.

The previous prime is 245520053. The next prime is 245520089. The reversal of 245520071 is 170025542.

It is an interprime number because it is at equal distance from previous prime (245520053) and next prime (245520089).

It is not a de Polignac number, because 245520071 - 2⁶ = 245520007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245520071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245520091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24215 + ... + 32823.

It is an arithmetic number, because the mean of its divisors is an integer number (21869400).

Almost surely, 2^245520071 is an apocalyptic number.

245520071 is a deficient number, since it is larger than the sum of its proper divisors (16912729).

245520071 is an equidigital number, since it uses as much as digits as its factorization.

245520071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726 (or 8707 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 245520071 is about 15669.0800942493. The cubic root of 245520071 is about 626.1749171807.

The spelling of 245520071 in words is "two hundred forty-five million, five hundred twenty thousand, seventy-one".