51436605 has 16 divisors (see below), whose sum is σ = 89780544. Its totient is φ = 24938880.

The previous prime is 51436597. The next prime is 51436607. The reversal of 51436605 is 50663415.

51436605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51436605 - 2³ = 51436597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51436607) 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 15 ways as a sum of consecutive naturals, for example, 155704 + ... + 156033.

It is an arithmetic number, because the mean of its divisors is an integer number (5611284).

Almost surely, 2^51436605 is an apocalyptic number.

51436605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51436605 is a deficient number, since it is larger than the sum of its proper divisors (38343939).

51436605 is a wasteful number, since it uses less digits than its factorization.

51436605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311756.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51436605 is about 7171.9317481415. The cubic root of 51436605 is about 371.8982190620.

The spelling of 51436605 in words is "fifty-one million, four hundred thirty-six thousand, six hundred five".