51002361 has 24 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 33415200.

The previous prime is 51002333. The next prime is 51002381. The reversal of 51002361 is 16320015.

It is not a de Polignac number, because 51002361 - 2⁹ = 51001849 is a prime.

It is a super-4 number, since 4×51002361⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (51002381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213280 + ... + 213518.

It is an arithmetic number, because the mean of its divisors is an integer number (3123120).

Almost surely, 2^51002361 is an apocalyptic number.

It is an amenable number.

51002361 is a deficient number, since it is larger than the sum of its proper divisors (23952519).

51002361 is a wasteful number, since it uses less digits than its factorization.

51002361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51002361 is about 7141.5937296937. The cubic root of 51002361 is about 370.8486994544.

Adding to 51002361 its reverse (16320015), we get a palindrome (67322376).

The spelling of 51002361 in words is "fifty-one million, two thousand, three hundred sixty-one".