55061730 has 48 divisors (see below), whose sum is σ = 143652600. Its totient is φ = 14632704.

The previous prime is 55061723. The next prime is 55061761. The reversal of 55061730 is 3716055.

It can be written as a sum of positive squares in 4 ways, for example, as 34892649 + 20169081 = 5907^2 + 4491^2 .

It is a super-2 number, since 2×55061730² = 6063588221185800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55061694 and 55061703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30534 + ... + 32286.

Almost surely, 2^55061730 is an apocalyptic number.

55061730 is an abundant number, since it is smaller than the sum of its proper divisors (88590870).

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

55061730 is a wasteful number, since it uses less digits than its factorization.

55061730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 55061730 is about 7420.3591557282. The cubic root of 55061730 is about 380.4374693991.

Adding to 55061730 its reverse (3716055), we get a palindrome (58777785).

The spelling of 55061730 in words is "fifty-five million, sixty-one thousand, seven hundred thirty".