6521752654 has 4 divisors (see below), whose sum is σ = 9782628984. Its totient is φ = 3260876326.

The previous prime is 6521752631. The next prime is 6521752669. The reversal of 6521752654 is 4562571256.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6521752654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630438162 + ... + 1630438165.

It is an arithmetic number, because the mean of its divisors is an integer number (2445657246).

Almost surely, 2^6521752654 is an apocalyptic number.

6521752654 is a deficient number, since it is larger than the sum of its proper divisors (3260876330).

6521752654 is a wasteful number, since it uses less digits than its factorization.

6521752654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260876329.

The product of its digits is 504000, while the sum is 43.

The square root of 6521752654 is about 80757.3690383732. The cubic root of 6521752654 is about 1868.3351071362.

The spelling of 6521752654 in words is "six billion, five hundred twenty-one million, seven hundred fifty-two thousand, six hundred fifty-four".