54215401551 has 16 divisors (see below), whose sum is σ = 76635783168. Its totient is φ = 34032333600.

The previous prime is 54215401529. The next prime is 54215401589. The reversal of 54215401551 is 15510451245.

It is a happy number.

It is not a de Polignac number, because 54215401551 - 2⁵ = 54215401519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54215401501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7874415 + ... + 7881296.

It is an arithmetic number, because the mean of its divisors is an integer number (4789736448).

Almost surely, 2^54215401551 is an apocalyptic number.

54215401551 is a deficient number, since it is larger than the sum of its proper divisors (22420381617).

54215401551 is a wasteful number, since it uses less digits than its factorization.

54215401551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15755782.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 54215401551 its reverse (15510451245), we get a palindrome (69725852796).

The spelling of 54215401551 in words is "fifty-four billion, two hundred fifteen million, four hundred one thousand, five hundred fifty-one".