5212455551 has 4 divisors (see below), whose sum is σ = 5297905704. Its totient is φ = 5127005400.

The previous prime is 5212455511. The next prime is 5212455553. The reversal of 5212455551 is 1555542125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5212455551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5212455553) 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, 42724985 + ... + 42725106.

It is an arithmetic number, because the mean of its divisors is an integer number (1324476426).

Almost surely, 2^5212455551 is an apocalyptic number.

5212455551 is a deficient number, since it is larger than the sum of its proper divisors (85450153).

5212455551 is an equidigital number, since it uses as much as digits as its factorization.

5212455551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85450152.

The product of its digits is 50000, while the sum is 35.

The square root of 5212455551 is about 72197.3375617135. The cubic root of 5212455551 is about 1733.8603750564.

Adding to 5212455551 its reverse (1555542125), we get a palindrome (6767997676).

The spelling of 5212455551 in words is "five billion, two hundred twelve million, four hundred fifty-five thousand, five hundred fifty-one".