51069730 has 32 divisors (see below), whose sum is σ = 94535424. Its totient is φ = 19854336.

The previous prime is 51069727. The next prime is 51069761. The reversal of 51069730 is 3796015.

It is a junction number, because it is equal to n+sod(n) for n = 51069692 and 51069701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90429 + ... + 90991.

It is an arithmetic number, because the mean of its divisors is an integer number (2954232).

It is a vampire number, since it can be written as 5630 ⋅ 9071 (with its own digits).

Almost surely, 2^51069730 is an apocalyptic number.

51069730 is a deficient number, since it is larger than the sum of its proper divisors (43465694).

51069730 is a wasteful number, since it uses less digits than its factorization.

51069730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 51069730 is about 7146.3088374349. The cubic root of 51069730 is about 371.0119122501.

The spelling of 51069730 in words is "fifty-one million, sixty-nine thousand, seven hundred thirty".