551202623 has 4 divisors (see below), whose sum is σ = 570209640. Its totient is φ = 532195608.

The previous prime is 551202557. The next prime is 551202643. The reversal of 551202623 is 326202155.

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 551202623 - 2¹⁸ = 550940479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551202592 and 551202601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551202643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9503465 + ... + 9503522.

It is an arithmetic number, because the mean of its divisors is an integer number (142552410).

Almost surely, 2^551202623 is an apocalyptic number.

551202623 is a deficient number, since it is larger than the sum of its proper divisors (19007017).

551202623 is a wasteful number, since it uses less digits than its factorization.

551202623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19007016.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 551202623 is about 23477.7048069014. The cubic root of 551202623 is about 819.9180083595.

Adding to 551202623 its reverse (326202155), we get a palindrome (877404778).

The spelling of 551202623 in words is "five hundred fifty-one million, two hundred two thousand, six hundred twenty-three".