54721373477 has 16 divisors (see below), whose sum is σ = 57811417200. Its totient is φ = 51723302400.

The previous prime is 54721373471. The next prime is 54721373503. The reversal of 54721373477 is 77437312745.

It is a Cunningham number, because it is equal to 233926²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 2145635041 + 52575738436 = 46321^2 + 229294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54721373477 is a prime.

It is a deceptive number, since it divides R_54721373476.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54721373471) 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, 155723 + ... + 365639.

It is an arithmetic number, because the mean of its divisors is an integer number (3613213575).

Almost surely, 2^54721373477 is an apocalyptic number.

It is an amenable number.

54721373477 is a deficient number, since it is larger than the sum of its proper divisors (3090043723).

54721373477 is a wasteful number, since it uses less digits than its factorization.

54721373477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210136.

The product of its digits is 3457440, while the sum is 50.

The spelling of 54721373477 in words is "fifty-four billion, seven hundred twenty-one million, three hundred seventy-three thousand, four hundred seventy-seven".