255616542 has 24 divisors (see below), whose sum is σ = 559216944. Its totient is φ = 84377664.

The previous prime is 255616531. The next prime is 255616561. The reversal of 255616542 is 245616552.

255616542 is a `hidden beast` number, since 2 + 55 + 61 + 6 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 255616497 and 255616506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67083 + ... + 70790.

It is an arithmetic number, because the mean of its divisors is an integer number (23300706).

Almost surely, 2^255616542 is an apocalyptic number.

255616542 is an abundant number, since it is smaller than the sum of its proper divisors (303600402).

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

255616542 is a wasteful number, since it uses less digits than its factorization.

255616542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137984 (or 137981 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 255616542 is about 15988.0124468303. The cubic root of 255616542 is about 634.6432302628.

The spelling of 255616542 in words is "two hundred fifty-five million, six hundred sixteen thousand, five hundred forty-two".