51538093 has 4 divisors (see below), whose sum is σ = 52411680. Its totient is φ = 50664508.

The previous prime is 51538063. The next prime is 51538111. The reversal of 51538093 is 39083515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39083515 = 5 ⋅7816703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51538093 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 (51538043) 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, 436705 + ... + 436822.

It is an arithmetic number, because the mean of its divisors is an integer number (13102920).

Almost surely, 2^51538093 is an apocalyptic number.

It is an amenable number.

51538093 is a deficient number, since it is larger than the sum of its proper divisors (873587).

51538093 is an equidigital number, since it uses as much as digits as its factorization.

51538093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873586.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 51538093 is about 7179.0036216734. The cubic root of 51538093 is about 372.1426520574.

The spelling of 51538093 in words is "fifty-one million, five hundred thirty-eight thousand, ninety-three".