51520323043 has 8 divisors (see below), whose sum is σ = 58882069088. Its totient is φ = 44159001984.

The previous prime is 51520323037. The next prime is 51520323103. The reversal of 51520323043 is 34032302515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51520323043 - 2⁵ = 51520323011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51520323443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220555 + ... + 389467.

It is an arithmetic number, because the mean of its divisors is an integer number (7360258636).

Almost surely, 2^51520323043 is an apocalyptic number.

51520323043 is a deficient number, since it is larger than the sum of its proper divisors (7361746045).

51520323043 is a wasteful number, since it uses less digits than its factorization.

51520323043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212493.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 51520323043 its reverse (34032302515), we get a palindrome (85552625558).

The spelling of 51520323043 in words is "fifty-one billion, five hundred twenty million, three hundred twenty-three thousand, forty-three".