54521005251 has 8 divisors (see below), whose sum is σ = 72739581120. Its totient is φ = 36324883112.

The previous prime is 54521005241. The next prime is 54521005261. The reversal of 54521005251 is 15250012545.

It is an interprime number because it is at equal distance from previous prime (54521005241) and next prime (54521005261).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54521005251 - 2⁵ = 54521005219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54521005241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5607765 + ... + 5617478.

It is an arithmetic number, because the mean of its divisors is an integer number (9092447640).

Almost surely, 2^54521005251 is an apocalyptic number.

54521005251 is a deficient number, since it is larger than the sum of its proper divisors (18218575869).

54521005251 is a wasteful number, since it uses less digits than its factorization.

54521005251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226865.

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 54521005251 its reverse (15250012545), we get a palindrome (69771017796).

The spelling of 54521005251 in words is "fifty-four billion, five hundred twenty-one million, five thousand, two hundred fifty-one".