51602439 has 12 divisors (see below), whose sum is σ = 80036664. Its totient is φ = 29487024.

The previous prime is 51602437. The next prime is 51602449. The reversal of 51602439 is 93420615.

It is not a de Polignac number, because 51602439 - 2¹ = 51602437 is a prime.

51602439 is a modest number, since divided by 2439 gives 516 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51602431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175372 + ... + 175665.

It is an arithmetic number, because the mean of its divisors is an integer number (6669722).

Almost surely, 2^51602439 is an apocalyptic number.

51602439 is a deficient number, since it is larger than the sum of its proper divisors (28434225).

51602439 is a wasteful number, since it uses less digits than its factorization.

51602439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351054 (or 351047 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 51602439 is about 7183.4837648595. The cubic root of 51602439 is about 372.2974626775.

The spelling of 51602439 in words is "fifty-one million, six hundred two thousand, four hundred thirty-nine".