255620023 has 4 divisors (see below), whose sum is σ = 257188408. Its totient is φ = 254051640.

The previous prime is 255620011. The next prime is 255620039. The reversal of 255620023 is 320026552.

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

It is a cyclic number.

It is not a de Polignac number, because 255620023 - 2¹³ = 255611831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255620023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255620003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783948 + ... + 784273.

It is an arithmetic number, because the mean of its divisors is an integer number (64297102).

Almost surely, 2^255620023 is an apocalyptic number.

255620023 is a deficient number, since it is larger than the sum of its proper divisors (1568385).

255620023 is a wasteful number, since it uses less digits than its factorization.

255620023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568384.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 255620023 is about 15988.1213092721. The cubic root of 255620023 is about 634.6461111184.

Adding to 255620023 its reverse (320026552), we get a palindrome (575646575).

The spelling of 255620023 in words is "two hundred fifty-five million, six hundred twenty thousand, twenty-three".