255216502 has 4 divisors (see below), whose sum is σ = 382824756. Its totient is φ = 127608250.

The previous prime is 255216463. The next prime is 255216509. The reversal of 255216502 is 205612552.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255216509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63804124 + ... + 63804127.

It is an arithmetic number, because the mean of its divisors is an integer number (95706189).

Almost surely, 2^255216502 is an apocalyptic number.

255216502 is a deficient number, since it is larger than the sum of its proper divisors (127608254).

255216502 is a wasteful number, since it uses less digits than its factorization.

255216502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127608253.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 255216502 is about 15975.4969249786. The cubic root of 255216502 is about 634.3119850921.

It can be divided in two parts, 25521 and 6502, that added together give a palindrome (32023).

The spelling of 255216502 in words is "two hundred fifty-five million, two hundred sixteen thousand, five hundred two".