551255145020 has 12 divisors (see below), whose sum is σ = 1157635804584. Its totient is φ = 220502058000.

The previous prime is 551255145017. The next prime is 551255145109. The reversal of 551255145020 is 20541552155.

551255145020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×551255145020² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13781378606 + ... + 13781378645.

It is an arithmetic number, because the mean of its divisors is an integer number (96469650382).

Almost surely, 2^551255145020 is an apocalyptic number.

It is an amenable number.

551255145020 is an abundant number, since it is smaller than the sum of its proper divisors (606380659564).

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

551255145020 is a wasteful number, since it uses less digits than its factorization.

551255145020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27562757260 (or 27562757258 counting only the distinct ones).

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

Adding to 551255145020 its reverse (20541552155), we get a palindrome (571796697175).

The spelling of 551255145020 in words is "five hundred fifty-one billion, two hundred fifty-five million, one hundred forty-five thousand, twenty".