54520351551 has 24 divisors (see below), whose sum is σ = 83395385424. Its totient is φ = 34204204800.

The previous prime is 54520351549. The next prime is 54520351559. The reversal of 54520351551 is 15515302545.

54520351551 is a `hidden beast` number, since 5 + 4 + 52 + 0 + 3 + 51 + 551 = 666.

It is not a de Polignac number, because 54520351551 - 2¹ = 54520351549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520351559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1367601 + ... + 1406901.

It is an arithmetic number, because the mean of its divisors is an integer number (3474807726).

Almost surely, 2^54520351551 is an apocalyptic number.

54520351551 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

54520351551 is a deficient number, since it is larger than the sum of its proper divisors (28875033873).

54520351551 is a wasteful number, since it uses less digits than its factorization.

54520351551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48391 (or 48388 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 54520351551 in words is "fifty-four billion, five hundred twenty million, three hundred fifty-one thousand, five hundred fifty-one".