51001404 has 24 divisors (see below), whose sum is σ = 119132160. Its totient is φ = 16982064.

The previous prime is 51001381. The next prime is 51001421. The reversal of 51001404 is 40410015.

It is a super-2 number, since 2×51001404² = 5202286419942432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13687 + ... + 17009.

It is an arithmetic number, because the mean of its divisors is an integer number (4963840).

Almost surely, 2^51001404 is an apocalyptic number.

It is an amenable number.

51001404 is an abundant number, since it is smaller than the sum of its proper divisors (68130756).

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

51001404 is a wasteful number, since it uses less digits than its factorization.

51001404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609 (or 4607 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 51001404 is about 7141.5267275282. The cubic root of 51001404 is about 370.8463799251.

Adding to 51001404 its reverse (40410015), we get a palindrome (91411419).

The spelling of 51001404 in words is "fifty-one million, one thousand, four hundred four".