51488039 has 4 divisors (see below), whose sum is σ = 51580056. Its totient is φ = 51396024.

The previous prime is 51488029. The next prime is 51488089. The reversal of 51488039 is 93088415.

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 51488039 - 2⁴ = 51488023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51487993 and 51488011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51488029) 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, 45164 + ... + 46289.

It is an arithmetic number, because the mean of its divisors is an integer number (12895014).

Almost surely, 2^51488039 is an apocalyptic number.

51488039 is a deficient number, since it is larger than the sum of its proper divisors (92017).

51488039 is an equidigital number, since it uses as much as digits as its factorization.

51488039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92016.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 51488039 is about 7175.5166364520. The cubic root of 51488039 is about 372.0221375618.

The spelling of 51488039 in words is "fifty-one million, four hundred eighty-eight thousand, thirty-nine".