51622143 has 16 divisors (see below), whose sum is σ = 72216576. Its totient is φ = 32737760.

The previous prime is 51622133. The next prime is 51622147. The reversal of 51622143 is 34122615.

It is a cyclic number.

It is not a de Polignac number, because 51622143 - 2⁴ = 51622127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51622147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11221 + ... + 15137.

It is an arithmetic number, because the mean of its divisors is an integer number (4513536).

Almost surely, 2^51622143 is an apocalyptic number.

51622143 is a deficient number, since it is larger than the sum of its proper divisors (20594433).

51622143 is a wasteful number, since it uses less digits than its factorization.

51622143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134.

The product of its digits is 1440, while the sum is 24.

The square root of 51622143 is about 7184.8551133617. The cubic root of 51622143 is about 372.3448429683.

Adding to 51622143 its reverse (34122615), we get a palindrome (85744758).

The spelling of 51622143 in words is "fifty-one million, six hundred twenty-two thousand, one hundred forty-three".