51090003 has 6 divisors (see below), whose sum is σ = 73796684. Its totient is φ = 34059996.

The previous prime is 51089971. The next prime is 51090029. The reversal of 51090003 is 30009015.

It is not a de Polignac number, because 51090003 - 2⁵ = 51089971 is a prime.

It is a super-2 number, since 2×51090003² = 5220376813080018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51090203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2838325 + ... + 2838342.

Almost surely, 2^51090003 is an apocalyptic number.

51090003 is a deficient number, since it is larger than the sum of its proper divisors (22706681).

51090003 is a wasteful number, since it uses less digits than its factorization.

51090003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676673 (or 5676670 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 51090003 is about 7147.7271212603. The cubic root of 51090003 is about 371.0609989234.

Adding to 51090003 its reverse (30009015), we get a palindrome (81099018).

The spelling of 51090003 in words is "fifty-one million, ninety thousand, three".