55030340 has 12 divisors (see below), whose sum is σ = 115563756. Its totient is φ = 22012128.

The previous prime is 55030337. The next prime is 55030351. The reversal of 55030340 is 4303055.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 25240576 = 5458^2 + 5024^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 2751517 = 55030340 / (5 + 5 + 0 + 3 + 0 + 3 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375739 + ... + 1375778.

It is an arithmetic number, because the mean of its divisors is an integer number (9630313).

Almost surely, 2^55030340 is an apocalyptic number.

It is an amenable number.

55030340 is an abundant number, since it is smaller than the sum of its proper divisors (60533416).

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

55030340 is a wasteful number, since it uses less digits than its factorization.

55030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751526 (or 2751524 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 55030340 is about 7418.2437274600. The cubic root of 55030340 is about 380.3651614506.

Adding to 55030340 its reverse (4303055), we get a palindrome (59333395).

The spelling of 55030340 in words is "fifty-five million, thirty thousand, three hundred forty".