551163123 has 72 divisors (see below), whose sum is σ = 984700080. Its totient is φ = 306996480.

The previous prime is 551163113. The next prime is 551163127. The reversal of 551163123 is 321361155.

551163123 is a `hidden beast` number, since 5 + 5 + 1 + 1 + 631 + 23 = 666.

It is not a de Polignac number, because 551163123 - 2⁵ = 551163091 is a prime.

It is a super-2 number, since 2×551163123² = 607561576310226258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (551163127) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 487623 + ... + 488751.

It is an arithmetic number, because the mean of its divisors is an integer number (13676390).

Almost surely, 2^551163123 is an apocalyptic number.

551163123 is a deficient number, since it is larger than the sum of its proper divisors (433536957).

551163123 is a wasteful number, since it uses less digits than its factorization.

551163123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 1180 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 551163123 is about 23476.8635682026. The cubic root of 551163123 is about 819.8984223769.

The spelling of 551163123 in words is "five hundred fifty-one million, one hundred sixty-three thousand, one hundred twenty-three".