54778572 has 48 divisors (see below), whose sum is σ = 143001600. Its totient is φ = 18133200.

The previous prime is 54778553. The next prime is 54778601. The reversal of 54778572 is 27587745.

54778572 is a `hidden beast` number, since 5 + 4 + 7 + 78 + 572 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14629 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (2979200).

Almost surely, 2^54778572 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 54778572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71500800).

54778572 is an abundant number, since it is smaller than the sum of its proper divisors (88223028).

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

54778572 is a wasteful number, since it uses less digits than its factorization.

54778572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523 (or 3515 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 54778572 is about 7401.2547584852. The cubic root of 54778572 is about 379.7842080439.

The spelling of 54778572 in words is "fifty-four million, seven hundred seventy-eight thousand, five hundred seventy-two".