54181780 has 24 divisors (see below), whose sum is σ = 113972040. Its totient is φ = 21636480.

The previous prime is 54181759. The next prime is 54181823. The reversal of 54181780 is 8718145.

It can be written as a sum of positive squares in 4 ways, for example, as 6240004 + 47941776 = 2498^2 + 6924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12270 + ... + 16090.

It is an arithmetic number, because the mean of its divisors is an integer number (4748835).

Almost surely, 2^54181780 is an apocalyptic number.

It is an amenable number.

54181780 is an abundant number, since it is smaller than the sum of its proper divisors (59790260).

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

54181780 is a wasteful number, since it uses less digits than its factorization.

54181780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539 (or 4537 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 54181780 is about 7360.8273991447. The cubic root of 54181780 is about 378.3999667008.

The spelling of 54181780 in words is "fifty-four million, one hundred eighty-one thousand, seven hundred eighty".