51676405 has 32 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 35884800.

The previous prime is 51676403. The next prime is 51676433. The reversal of 51676405 is 50467615.

It is a happy number.

It is not a de Polignac number, because 51676405 - 2¹ = 51676403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51676403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285415 + ... + 285595.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^51676405 is an apocalyptic number.

51676405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51676405 is a deficient number, since it is larger than the sum of its proper divisors (19085195).

51676405 is a wasteful number, since it uses less digits than its factorization.

51676405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 51676405 is about 7188.6302589575. The cubic root of 51676405 is about 372.4752592309.

The spelling of 51676405 in words is "fifty-one million, six hundred seventy-six thousand, four hundred five".