245114231521 has 4 divisors (see below), whose sum is σ = 247868324100. Its totient is φ = 242360138944.

The previous prime is 245114231507. The next prime is 245114231543. The reversal of 245114231521 is 125132411542.

245114231521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 105567157921 + 139547073600 = 324911^2 + 373560^2 .

It is a cyclic number.

It is not a de Polignac number, because 245114231521 - 2¹¹ = 245114229473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245114231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377046156 + ... + 1377046333.

It is an arithmetic number, because the mean of its divisors is an integer number (61967081025).

Almost surely, 2^245114231521 is an apocalyptic number.

It is an amenable number.

245114231521 is a deficient number, since it is larger than the sum of its proper divisors (2754092579).

245114231521 is an equidigital number, since it uses as much as digits as its factorization.

245114231521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754092578.

The product of its digits is 9600, while the sum is 31.

The spelling of 245114231521 in words is "two hundred forty-five billion, one hundred fourteen million, two hundred thirty-one thousand, five hundred twenty-one".