54897820747 has 16 divisors (see below), whose sum is σ = 68459162112. Its totient is φ = 42768069120.

The previous prime is 54897820723. The next prime is 54897820771. The reversal of 54897820747 is 74702879845.

It is an interprime number because it is at equal distance from previous prime (54897820723) and next prime (54897820771).

It is a de Polignac number, because none of the positive numbers 2^k-54897820747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54897820247) 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, 282603 + ... + 435499.

It is an arithmetic number, because the mean of its divisors is an integer number (4278697632).

Almost surely, 2^54897820747 is an apocalyptic number.

54897820747 is a deficient number, since it is larger than the sum of its proper divisors (13561341365).

54897820747 is a wasteful number, since it uses less digits than its factorization.

54897820747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157578.

The product of its (nonzero) digits is 31610880, while the sum is 61.

The spelling of 54897820747 in words is "fifty-four billion, eight hundred ninety-seven million, eight hundred twenty thousand, seven hundred forty-seven".