54251730 has 96 divisors (see below), whose sum is σ = 153906480. Its totient is φ = 13178880.

The previous prime is 54251723. The next prime is 54251759. The reversal of 54251730 is 3715245.

It is a happy number.

54251730 is a `hidden beast` number, since 542 + 51 + 73 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3143529 + 51108201 = 1773^2 + 7149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54251694 and 54251703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103870 + ... + 104390.

Almost surely, 2^54251730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54251730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76953240).

54251730 is an abundant number, since it is smaller than the sum of its proper divisors (99654750).

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

54251730 is a wasteful number, since it uses less digits than its factorization.

54251730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 54251730 is about 7365.5773704442. The cubic root of 54251730 is about 378.5627378703.

Adding to 54251730 its reverse (3715245), we get a palindrome (57966975).

The spelling of 54251730 in words is "fifty-four million, two hundred fifty-one thousand, seven hundred thirty".