5251656601 has 4 divisors (see below), whose sum is σ = 5528059600. Its totient is φ = 4975253604.

The previous prime is 5251656517. The next prime is 5251656637. The reversal of 5251656601 is 1066561525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5251656601 - 2²¹ = 5249559449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251656671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138201471 + ... + 138201508.

It is an arithmetic number, because the mean of its divisors is an integer number (1382014900).

Almost surely, 2^5251656601 is an apocalyptic number.

It is an amenable number.

5251656601 is a deficient number, since it is larger than the sum of its proper divisors (276402999).

5251656601 is a wasteful number, since it uses less digits than its factorization.

5251656601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276402998.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 5251656601 is about 72468.3144622531. The cubic root of 5251656601 is about 1738.1961092257.

The spelling of 5251656601 in words is "five billion, two hundred fifty-one million, six hundred fifty-six thousand, six hundred one".