55144025 has 6 divisors (see below), whose sum is σ = 68378622. Its totient is φ = 44115200.

The previous prime is 55144021. The next prime is 55144031. The reversal of 55144025 is 52044155.

It can be written as a sum of positive squares in 3 ways, for example, as 11689561 + 43454464 = 3419^2 + 6592^2 .

It is not a de Polignac number, because 55144025 - 2² = 55144021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55143985 and 55144003.

It is not an unprimeable number, because it can be changed into a prime (55144021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1102856 + ... + 1102905.

It is an arithmetic number, because the mean of its divisors is an integer number (11396437).

Almost surely, 2^55144025 is an apocalyptic number.

It is an amenable number.

55144025 is a deficient number, since it is larger than the sum of its proper divisors (13234597).

55144025 is a wasteful number, since it uses less digits than its factorization.

55144025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205771 (or 2205766 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 55144025 is about 7425.9023020775. The cubic root of 55144025 is about 380.6269083968.

The spelling of 55144025 in words is "fifty-five million, one hundred forty-four thousand, twenty-five".