53966513251 has 4 divisors (see below), whose sum is σ = 61676015152. Its totient is φ = 46257011352.

The previous prime is 53966513233. The next prime is 53966513287. The reversal of 53966513251 is 15231566935.

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 53966513251 - 2¹⁷ = 53966382179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53966513201) 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, 3854750940 + ... + 3854750953.

It is an arithmetic number, because the mean of its divisors is an integer number (15419003788).

Almost surely, 2^53966513251 is an apocalyptic number.

53966513251 is a deficient number, since it is larger than the sum of its proper divisors (7709501901).

53966513251 is an equidigital number, since it uses as much as digits as its factorization.

53966513251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709501900.

The product of its digits is 729000, while the sum is 46.

The spelling of 53966513251 in words is "fifty-three billion, nine hundred sixty-six million, five hundred thirteen thousand, two hundred fifty-one".