51144151 has 4 divisors (see below), whose sum is σ = 51161112. Its totient is φ = 51127192.

The previous prime is 51144133. The next prime is 51144187. The reversal of 51144151 is 15144115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51144151 - 2¹⁵ = 51111383 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 (51144851) 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, 2596 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (12790278).

Almost surely, 2^51144151 is an apocalyptic number.

51144151 is a deficient number, since it is larger than the sum of its proper divisors (16961).

51144151 is a wasteful number, since it uses less digits than its factorization.

51144151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960.

The product of its digits is 400, while the sum is 22.

The square root of 51144151 is about 7151.5138956727. The cubic root of 51144151 is about 371.1920429352.

Adding to 51144151 its reverse (15144115), we get a palindrome (66288266).

The spelling of 51144151 in words is "fifty-one million, one hundred forty-four thousand, one hundred fifty-one".