51888497 has 4 divisors (see below), whose sum is σ = 51914916. Its totient is φ = 51862080.

The previous prime is 51888481. The next prime is 51888503. The reversal of 51888497 is 79488815.

51888497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26173456 + 25715041 = 5116^2 + 5071^2 .

It is a cyclic number.

It is not a de Polignac number, because 51888497 - 2⁴ = 51888481 is a prime.

It is a super-2 number, since 2×51888497² = 5384832241838018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51888407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10004 + ... + 14277.

It is an arithmetic number, because the mean of its divisors is an integer number (12978729).

Almost surely, 2^51888497 is an apocalyptic number.

It is an amenable number.

51888497 is a deficient number, since it is larger than the sum of its proper divisors (26419).

51888497 is a wasteful number, since it uses less digits than its factorization.

51888497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26418.

The product of its digits is 645120, while the sum is 50.

The square root of 51888497 is about 7203.3670599241. The cubic root of 51888497 is about 372.9841387453.

The spelling of 51888497 in words is "fifty-one million, eight hundred eighty-eight thousand, four hundred ninety-seven".