51030404 has 24 divisors (see below), whose sum is σ = 92999256. Its totient is φ = 24480000.

The previous prime is 51030403. The next prime is 51030449. The reversal of 51030404 is 40403015.

It can be written as a sum of positive squares in 4 ways, for example, as 15054400 + 35976004 = 3880^2 + 5998^2 .

It is not an unprimeable number, because it can be changed into a prime (51030403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7454 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (3874969).

Almost surely, 2^51030404 is an apocalyptic number.

It is an amenable number.

51030404 is a deficient number, since it is larger than the sum of its proper divisors (41968852).

51030404 is a wasteful number, since it uses less digits than its factorization.

51030404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207 (or 5205 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51030404 is about 7143.5568171605. The cubic root of 51030404 is about 370.9166558157.

Adding to 51030404 its reverse (40403015), we get a palindrome (91433419).

The spelling of 51030404 in words is "fifty-one million, thirty thousand, four hundred four".