255061620 has 72 divisors (see below), whose sum is σ = 844028640. Its totient is φ = 61832640.

The previous prime is 255061603. The next prime is 255061633. The reversal of 255061620 is 26160552.

255061620 is a `hidden beast` number, since 25 + 5 + 0 + 616 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62430 + ... + 66389.

It is an arithmetic number, because the mean of its divisors is an integer number (11722620).

Almost surely, 2^255061620 is an apocalyptic number.

255061620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255061620 is an abundant number, since it is smaller than the sum of its proper divisors (588967020).

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

255061620 is a wasteful number, since it uses less digits than its factorization.

255061620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128845 (or 128840 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 255061620 is about 15970.6487031679. The cubic root of 255061620 is about 634.1836451816.

The spelling of 255061620 in words is "two hundred fifty-five million, sixty-one thousand, six hundred twenty".