2528613561 has 8 divisors (see below), whose sum is σ = 3398032384. Its totient is φ = 1672468560.

The previous prime is 2528613553. The next prime is 2528613587. The reversal of 2528613561 is 1653168252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2528613561 - 2³ = 2528613553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2528613551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3318010 + ... + 3318771.

It is an arithmetic number, because the mean of its divisors is an integer number (424754048).

Almost surely, 2^2528613561 is an apocalyptic number.

It is an amenable number.

2528613561 is a deficient number, since it is larger than the sum of its proper divisors (869418823).

2528613561 is a wasteful number, since it uses less digits than its factorization.

2528613561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636911.

The product of its digits is 86400, while the sum is 39.

The square root of 2528613561 is about 50285.3215262665. The cubic root of 2528613561 is about 1362.3671219740.

The spelling of 2528613561 in words is "two billion, five hundred twenty-eight million, six hundred thirteen thousand, five hundred sixty-one".