551262861 has 8 divisors (see below), whose sum is σ = 816685760. Its totient is φ = 367508556.

The previous prime is 551262857. The next prime is 551262923. The reversal of 551262861 is 168262155.

551262861 is a `hidden beast` number, since 5 + 512 + 62 + 86 + 1 = 666.

551262861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551262861 - 2² = 551262857 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 (551262841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10208545 + ... + 10208598.

It is an arithmetic number, because the mean of its divisors is an integer number (102085720).

Almost surely, 2^551262861 is an apocalyptic number.

It is an amenable number.

551262861 is a deficient number, since it is larger than the sum of its proper divisors (265422899).

551262861 is a wasteful number, since it uses less digits than its factorization.

551262861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417152 (or 20417146 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 551262861 is about 23478.9876485337. The cubic root of 551262861 is about 819.9478754295.

The spelling of 551262861 in words is "five hundred fifty-one million, two hundred sixty-two thousand, eight hundred sixty-one".