54801780 has 96 divisors (see below), whose sum is σ = 171376128. Its totient is φ = 12969600.

The previous prime is 54801767. The next prime is 54801787. The reversal of 54801780 is 8710845.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54801787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27415 + ... + 29345.

It is an arithmetic number, because the mean of its divisors is an integer number (1785168).

Almost surely, 2^54801780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54801780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85688064).

54801780 is an abundant number, since it is smaller than the sum of its proper divisors (116574348).

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

54801780 is a wasteful number, since it uses less digits than its factorization.

54801780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 54801780 is about 7402.8224347204. The cubic root of 54801780 is about 379.8378347762.

It can be divided in two parts, 5480 and 1780, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 54801780 in words is "fifty-four million, eight hundred one thousand, seven hundred eighty".