51702066 has 96 divisors (see below), whose sum is σ = 131262768. Its totient is φ = 14561280.

The previous prime is 51702029. The next prime is 51702071. The reversal of 51702066 is 66020715.

It can be written as a sum of positive squares in 8 ways, for example, as 1703025 + 49999041 = 1305^2 + 7071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162940 + ... + 163256.

Almost surely, 2^51702066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51702066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65631384).

51702066 is an abundant number, since it is smaller than the sum of its proper divisors (79560702).

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

51702066 is a wasteful number, since it uses less digits than its factorization.

51702066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 51702066 is about 7190.4148698111. The cubic root of 51702066 is about 372.5369024894.

It can be divided in two parts, 5 and 1702066, that added together give a palindrome (1702071).

The spelling of 51702066 in words is "fifty-one million, seven hundred two thousand, sixty-six".