55325540 has 12 divisors (see below), whose sum is σ = 116183676. Its totient is φ = 22130208.

The previous prime is 55325537. The next prime is 55325551. The reversal of 55325540 is 4552355.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16711744 + 38613796 = 4088^2 + 6214^2 .

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, 1383119 + ... + 1383158.

It is an arithmetic number, because the mean of its divisors is an integer number (9681973).

Almost surely, 2^55325540 is an apocalyptic number.

It is an amenable number.

55325540 is an abundant number, since it is smaller than the sum of its proper divisors (60858136).

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

55325540 is a wasteful number, since it uses less digits than its factorization.

55325540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766286 (or 2766284 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 55325540 is about 7438.1140082685. The cubic root of 55325540 is about 381.0440815803.

Adding to 55325540 its reverse (4552355), we get a palindrome (59877895).

The spelling of 55325540 in words is "fifty-five million, three hundred twenty-five thousand, five hundred forty".