51162249 has 4 divisors (see below), whose sum is σ = 68216336. Its totient is φ = 34108164.

The previous prime is 51162247. The next prime is 51162259. The reversal of 51162249 is 94226115.

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 not a de Polignac number, because 51162249 - 2¹ = 51162247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51162247) 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 3 ways as a sum of consecutive naturals, for example, 8527039 + ... + 8527044.

It is an arithmetic number, because the mean of its divisors is an integer number (17054084).

Almost surely, 2^51162249 is an apocalyptic number.

It is an amenable number.

51162249 is a deficient number, since it is larger than the sum of its proper divisors (17054087).

51162249 is a wasteful number, since it uses less digits than its factorization.

51162249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17054086.

The product of its digits is 4320, while the sum is 30.

The square root of 51162249 is about 7152.7791102480. The cubic root of 51162249 is about 371.2358214268.

The spelling of 51162249 in words is "fifty-one million, one hundred sixty-two thousand, two hundred forty-nine".