5256209654 has 4 divisors (see below), whose sum is σ = 7884314484. Its totient is φ = 2628104826.

The previous prime is 5256209653. The next prime is 5256209659. The reversal of 5256209654 is 4569026525.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5256209653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314052412 + ... + 1314052415.

It is an arithmetic number, because the mean of its divisors is an integer number (1971078621).

Almost surely, 2^5256209654 is an apocalyptic number.

5256209654 is a deficient number, since it is larger than the sum of its proper divisors (2628104830).

5256209654 is a wasteful number, since it uses less digits than its factorization.

5256209654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628104829.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 5256209654 is about 72499.7217511902. The cubic root of 5256209654 is about 1738.6982881002.

The spelling of 5256209654 in words is "five billion, two hundred fifty-six million, two hundred nine thousand, six hundred fifty-four".