51776466 has 64 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 14353920.

The previous prime is 51776443. The next prime is 51776467. The reversal of 51776466 is 66467715.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (51776467) 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, 289165 + ... + 289343.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^51776466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51776466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60963840).

51776466 is an abundant number, since it is smaller than the sum of its proper divisors (70151214).

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

51776466 is a wasteful number, since it uses less digits than its factorization.

51776466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 211680, while the sum is 42.

The square root of 51776466 is about 7195.5865639988. The cubic root of 51776466 is about 372.7155121233.

The spelling of 51776466 in words is "fifty-one million, seven hundred seventy-six thousand, four hundred sixty-six".