255561424 has 10 divisors (see below), whose sum is σ = 495150290. Its totient is φ = 127780704.

The previous prime is 255561413. The next prime is 255561433. The reversal of 255561424 is 424165552.

It can be written as a sum of positive squares in only one way, i.e., 247495824 + 8065600 = 15732^2 + 2840^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255561424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7986279 + ... + 7986310.

It is an arithmetic number, because the mean of its divisors is an integer number (49515029).

Almost surely, 2^255561424 is an apocalyptic number.

It is an amenable number.

255561424 is a deficient number, since it is larger than the sum of its proper divisors (239588866).

255561424 is a wasteful number, since it uses less digits than its factorization.

255561424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15972597 (or 15972591 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 255561424 is about 15986.2886249436. The cubic root of 255561424 is about 634.5976114362.

The spelling of 255561424 in words is "two hundred fifty-five million, five hundred sixty-one thousand, four hundred twenty-four".