54251432505 has 32 divisors (see below), whose sum is σ = 100640344320. Its totient is φ = 27676091520.

The previous prime is 54251432483. The next prime is 54251432513. The reversal of 54251432505 is 50523415245.

54251432505 is a `hidden beast` number, since 5 + 4 + 2 + 5 + 143 + 2 + 505 = 666.

It is not a de Polignac number, because 54251432505 - 2⁶ = 54251432441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54251432505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8733036 + ... + 8739245.

It is an arithmetic number, because the mean of its divisors is an integer number (3145010760).

Almost surely, 2^54251432505 is an apocalyptic number.

It is an amenable number.

54251432505 is a deficient number, since it is larger than the sum of its proper divisors (46388911815).

54251432505 is a wasteful number, since it uses less digits than its factorization.

54251432505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17472318 (or 17472312 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 54251432505 in words is "fifty-four billion, two hundred fifty-one million, four hundred thirty-two thousand, five hundred five".