51748589 has 4 divisors (see below), whose sum is σ = 52521024. Its totient is φ = 50976156.

The previous prime is 51748577. The next prime is 51748621. The reversal of 51748589 is 98584715.

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: 98584715 = 5 ⋅19716943.

It is a cyclic number.

It is not a de Polignac number, because 51748589 - 2⁴ = 51748573 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 (51748549) 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, 386117 + ... + 386250.

It is an arithmetic number, because the mean of its divisors is an integer number (13130256).

Almost surely, 2^51748589 is an apocalyptic number.

It is an amenable number.

51748589 is a deficient number, since it is larger than the sum of its proper divisors (772435).

51748589 is an equidigital number, since it uses as much as digits as its factorization.

51748589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772434.

The product of its digits is 403200, while the sum is 47.

The square root of 51748589 is about 7193.6492130212. The cubic root of 51748589 is about 372.6486087827.

The spelling of 51748589 in words is "fifty-one million, seven hundred forty-eight thousand, five hundred eighty-nine".