5511951 has 6 divisors (see below), whose sum is σ = 7961720. Its totient is φ = 3674628.

The previous prime is 5511949. The next prime is 5511967. The reversal of 5511951 is 1591155.

It is not a de Polignac number, because 5511951 - 2¹ = 5511949 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 (5511901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306211 + ... + 306228.

Almost surely, 2^5511951 is an apocalyptic number.

5511951 is a deficient number, since it is larger than the sum of its proper divisors (2449769).

5511951 is a wasteful number, since it uses less digits than its factorization.

5511951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612445 (or 612442 counting only the distinct ones).

The product of its digits is 1125, while the sum is 27.

The square root of 5511951 is about 2347.7544590523. The cubic root of 5511951 is about 176.6451763741.

The spelling of 5511951 in words is "five million, five hundred eleven thousand, nine hundred fifty-one".