51010002 has 12 divisors (see below), whose sum is σ = 110521710. Its totient is φ = 17003328.

The previous prime is 51009967. The next prime is 51010019. The reversal of 51010002 is 20001015.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34680321 + 16329681 = 5889^2 + 4041^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1416927 + ... + 1416962.

Almost surely, 2^51010002 is an apocalyptic number.

51010002 is an abundant number, since it is smaller than the sum of its proper divisors (59511708).

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

51010002 is a wasteful number, since it uses less digits than its factorization.

51010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833897 (or 2833894 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 51010002 is about 7142.1286742819. The cubic root of 51010002 is about 370.8672182927.

Adding to 51010002 its reverse (20001015), we get a palindrome (71011017).

The spelling of 51010002 in words is "fifty-one million, ten thousand, two".