551251525851 has 24 divisors (see below), whose sum is σ = 857606262240. Its totient is φ = 339190609536.

The previous prime is 551251525823. The next prime is 551251525871. The reversal of 551251525851 is 158525152155.

551251525851 is a `hidden beast` number, since 5 + 5 + 12 + 5 + 1 + 52 + 585 + 1 = 666.

It is not a de Polignac number, because 551251525851 - 2³⁰ = 550177784027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551251525797 and 551251525806.

It is not an unprimeable number, because it can be changed into a prime (551251525871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 698890 + ... + 1261328.

It is an arithmetic number, because the mean of its divisors is an integer number (35733594260).

Almost surely, 2^551251525851 is an apocalyptic number.

551251525851 is a deficient number, since it is larger than the sum of its proper divisors (306354736389).

551251525851 is a wasteful number, since it uses less digits than its factorization.

551251525851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570835 (or 570832 counting only the distinct ones).

The product of its digits is 500000, while the sum is 45.

The spelling of 551251525851 in words is "five hundred fifty-one billion, two hundred fifty-one million, five hundred twenty-five thousand, eight hundred fifty-one".