2528011247 has 4 divisors (see below), whose sum is σ = 2528403696. Its totient is φ = 2527618800.

The previous prime is 2528011223. The next prime is 2528011249. The reversal of 2528011247 is 7421108252.

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

It is a cyclic number.

It is not a de Polignac number, because 2528011247 - 2⁶ = 2528011183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528011249) 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, 186398 + ... + 199499.

It is an arithmetic number, because the mean of its divisors is an integer number (632100924).

Almost surely, 2^2528011247 is an apocalyptic number.

2528011247 is a deficient number, since it is larger than the sum of its proper divisors (392449).

2528011247 is an equidigital number, since it uses as much as digits as its factorization.

2528011247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392448.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2528011247 is about 50279.3322051914. The cubic root of 2528011247 is about 1362.2589417489.

Adding to 2528011247 its reverse (7421108252), we get a palindrome (9949119499).

The spelling of 2528011247 in words is "two billion, five hundred twenty-eight million, eleven thousand, two hundred forty-seven".