51877872 has 60 divisors (see below), whose sum is σ = 145776384. Its totient is φ = 17222400.

The previous prime is 51877871. The next prime is 51877873. The reversal of 51877872 is 27877815.

It is an interprime number because it is at equal distance from previous prime (51877871) and next prime (51877873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51877871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44497 + ... + 45647.

Almost surely, 2^51877872 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 51877872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72888192).

51877872 is an abundant number, since it is smaller than the sum of its proper divisors (93898512).

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

51877872 is a wasteful number, since it uses less digits than its factorization.

51877872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478 (or 1469 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 51877872 is about 7202.6295198351. The cubic root of 51877872 is about 372.9586788507.

The spelling of 51877872 in words is "fifty-one million, eight hundred seventy-seven thousand, eight hundred seventy-two".