55143325 has 12 divisors (see below), whose sum is σ = 72400500. Its totient is φ = 41519360.

The previous prime is 55143317. The next prime is 55143337. The reversal of 55143325 is 52334155.

It can be written as a sum of positive squares in 6 ways, for example, as 427716 + 54715609 = 654^2 + 7397^2 .

It is not a de Polignac number, because 55143325 - 2³ = 55143317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55143293 and 55143302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64450 + ... + 65299.

It is an arithmetic number, because the mean of its divisors is an integer number (6033375).

Almost surely, 2^55143325 is an apocalyptic number.

It is an amenable number.

55143325 is a deficient number, since it is larger than the sum of its proper divisors (17257175).

55143325 is a wasteful number, since it uses less digits than its factorization.

55143325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129776 (or 129771 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 55143325 is about 7425.8551696084. The cubic root of 55143325 is about 380.6252978267.

It can be divided in two parts, 55 and 143325, that added together give a triangular number (143380 = T₅₃₅).

The spelling of 55143325 in words is "fifty-five million, one hundred forty-three thousand, three hundred twenty-five".