53877621251 has 4 divisors (see below), whose sum is σ = 53884207104. Its totient is φ = 53871035400.

The previous prime is 53877621209. The next prime is 53877621271. The reversal of 53877621251 is 15212677835.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53877621251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53877621196 and 53877621205.

It is not an unprimeable number, because it can be changed into a prime (53877621271) 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, 3280640 + ... + 3297021.

It is an arithmetic number, because the mean of its divisors is an integer number (13471051776).

Almost surely, 2^53877621251 is an apocalyptic number.

53877621251 is a deficient number, since it is larger than the sum of its proper divisors (6585853).

53877621251 is an equidigital number, since it uses as much as digits as its factorization.

53877621251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585852.

The product of its digits is 705600, while the sum is 47.

The spelling of 53877621251 in words is "fifty-three billion, eight hundred seventy-seven million, six hundred twenty-one thousand, two hundred fifty-one".