51413143 has 4 divisors (see below), whose sum is σ = 53186040. Its totient is φ = 49640248.

The previous prime is 51413137. The next prime is 51413149. The reversal of 51413143 is 34131415.

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

It is an interprime number because it is at equal distance from previous prime (51413137) and next prime (51413149).

It is a cyclic number.

It is not a de Polignac number, because 51413143 - 2⁵ = 51413111 is a prime.

It is a super-2 number, since 2×51413143² = 5286622546276898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51413149) 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, 886405 + ... + 886462.

It is an arithmetic number, because the mean of its divisors is an integer number (13296510).

Almost surely, 2^51413143 is an apocalyptic number.

51413143 is a deficient number, since it is larger than the sum of its proper divisors (1772897).

51413143 is a wasteful number, since it uses less digits than its factorization.

51413143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772896.

The product of its digits is 720, while the sum is 22.

The square root of 51413143 is about 7170.2958795297. The cubic root of 51413143 is about 371.8416652840.

Adding to 51413143 its reverse (34131415), we get a palindrome (85544558).

The spelling of 51413143 in words is "fifty-one million, four hundred thirteen thousand, one hundred forty-three".