54551453440 has 72 divisors (see below), whose sum is σ = 142546704048. Its totient is φ = 19836887040.

The previous prime is 54551453389. The next prime is 54551453443. The reversal of 54551453440 is 4435415545.

It is a super-2 number, since 2×54551453440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 54551453393 and 54551453402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54551453443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923117 + ... + 1951276.

It is an arithmetic number, because the mean of its divisors is an integer number (1979815334).

Almost surely, 2^54551453440 is an apocalyptic number.

It is an amenable number.

54551453440 is an abundant number, since it is smaller than the sum of its proper divisors (87995250608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54551453440 is a wasteful number, since it uses less digits than its factorization.

54551453440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874425 (or 3874411 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 54551453440 its reverse (4435415545), we get a palindrome (58986868985).

The spelling of 54551453440 in words is "fifty-four billion, five hundred fifty-one million, four hundred fifty-three thousand, four hundred forty".