51030004 has 6 divisors (see below), whose sum is σ = 89302514. Its totient is φ = 25515000.

The previous prime is 51029987. The next prime is 51030013. The reversal of 51030004 is 40003015.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 25020004 = 5100^2 + 5002^2 .

It is a super-2 number, since 2×51030004² = 5208122616480032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378747 + ... + 6378754.

Almost surely, 2^51030004 is an apocalyptic number.

It is an amenable number.

51030004 is a deficient number, since it is larger than the sum of its proper divisors (38272510).

51030004 is a wasteful number, since it uses less digits than its factorization.

51030004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12757505 (or 12757503 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 51030004 is about 7143.5288198481. The cubic root of 51030004 is about 370.9156866742.

Adding to 51030004 its reverse (40003015), we get a palindrome (91033019).

The spelling of 51030004 in words is "fifty-one million, thirty thousand, four".