51436506 has 16 divisors (see below), whose sum is σ = 112225248. Its totient is φ = 15586800.

The previous prime is 51436493. The next prime is 51436507. The reversal of 51436506 is 60563415.

It is not an unprimeable number, because it can be changed into a prime (51436507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389605 + ... + 389736.

It is an arithmetic number, because the mean of its divisors is an integer number (7014078).

Almost surely, 2^51436506 is an apocalyptic number.

51436506 is an abundant number, since it is smaller than the sum of its proper divisors (60788742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51436506 is a wasteful number, since it uses less digits than its factorization.

51436506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779357.

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

The square root of 51436506 is about 7171.9248462320. The cubic root of 51436506 is about 371.8979804644.

The spelling of 51436506 in words is "fifty-one million, four hundred thirty-six thousand, five hundred six".