551427115 has 4 divisors (see below), whose sum is σ = 661712544. Its totient is φ = 441141688.

The previous prime is 551427089. The next prime is 551427143. The reversal of 551427115 is 511724155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511724155 = 5 ⋅102344831.

It is a cyclic number.

It is not a de Polignac number, because 551427115 - 2²⁹ = 14556203 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 55142707 + ... + 55142716.

It is an arithmetic number, because the mean of its divisors is an integer number (165428136).

Almost surely, 2^551427115 is an apocalyptic number.

551427115 is a deficient number, since it is larger than the sum of its proper divisors (110285429).

551427115 is a wasteful number, since it uses less digits than its factorization.

551427115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110285428.

The product of its digits is 7000, while the sum is 31.

The square root of 551427115 is about 23482.4852815881. The cubic root of 551427115 is about 820.0293044257.

The spelling of 551427115 in words is "five hundred fifty-one million, four hundred twenty-seven thousand, one hundred fifteen".