51156064 has 48 divisors (see below), whose sum is σ = 104055840. Its totient is φ = 24744960.

The previous prime is 51156023. The next prime is 51156067. The reversal of 51156064 is 46065115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51156067) 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, 142317 + ... + 142675.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2^51156064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51156064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52027920).

51156064 is an abundant number, since it is smaller than the sum of its proper divisors (52899776).

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

51156064 is a wasteful number, since it uses less digits than its factorization.

51156064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51156064 is about 7152.3467477465. The cubic root of 51156064 is about 371.2208612681.

The spelling of 51156064 in words is "fifty-one million, one hundred fifty-six thousand, sixty-four".