53661425 has 6 divisors (see below), whose sum is σ = 66540198. Its totient is φ = 42929120.

The previous prime is 53661379. The next prime is 53661427. The reversal of 53661425 is 52416635.

It can be written as a sum of positive squares in 3 ways, for example, as 20449 + 53640976 = 143^2 + 7324^2 .

It is not a de Polignac number, because 53661425 - 2¹⁰ = 53660401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53661391 and 53661400.

It is not an unprimeable number, because it can be changed into a prime (53661427) 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, 1073204 + ... + 1073253.

It is an arithmetic number, because the mean of its divisors is an integer number (11090033).

Almost surely, 2^53661425 is an apocalyptic number.

It is an amenable number.

53661425 is a deficient number, since it is larger than the sum of its proper divisors (12878773).

53661425 is a wasteful number, since it uses less digits than its factorization.

53661425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146467 (or 2146462 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 53661425 is about 7325.3958937384. The cubic root of 53661425 is about 377.1846993715.

The spelling of 53661425 in words is "fifty-three million, six hundred sixty-one thousand, four hundred twenty-five".