51201443 has 4 divisors (see below), whose sum is σ = 52967040. Its totient is φ = 49435848.

The previous prime is 51201431. The next prime is 51201499. The reversal of 51201443 is 34410215.

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 51201443 - 2⁶ = 51201379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51201643) 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, 882755 + ... + 882812.

It is an arithmetic number, because the mean of its divisors is an integer number (13241760).

Almost surely, 2^51201443 is an apocalyptic number.

51201443 is a deficient number, since it is larger than the sum of its proper divisors (1765597).

51201443 is a wasteful number, since it uses less digits than its factorization.

51201443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765596.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51201443 is about 7155.5183599792. The cubic root of 51201443 is about 371.3305951004.

Adding to 51201443 its reverse (34410215), we get a palindrome (85611658).

The spelling of 51201443 in words is "fifty-one million, two hundred one thousand, four hundred forty-three".