551117001 has 4 divisors (see below), whose sum is σ = 734822672. Its totient is φ = 367411332.

The previous prime is 551116991. The next prime is 551117011. The reversal of 551117001 is 100711155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (551116991) and next prime (551117011).

It is not a de Polignac number, because 551117001 - 2⁷ = 551116873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551117011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91852831 + ... + 91852836.

It is an arithmetic number, because the mean of its divisors is an integer number (183705668).

Almost surely, 2^551117001 is an apocalyptic number.

It is an amenable number.

551117001 is a deficient number, since it is larger than the sum of its proper divisors (183705671).

551117001 is a wasteful number, since it uses less digits than its factorization.

551117001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183705670.

The product of its (nonzero) digits is 175, while the sum is 21.

The square root of 551117001 is about 23475.8812614138. The cubic root of 551117001 is about 819.8755517068.

Adding to 551117001 its reverse (100711155), we get a palindrome (651828156).

The spelling of 551117001 in words is "five hundred fifty-one million, one hundred seventeen thousand, one".