51252103 has 4 divisors (see below), whose sum is σ = 58573840. Its totient is φ = 43930368.

The previous prime is 51252031. The next prime is 51252107. The reversal of 51252103 is 30125215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51252103 - 2⁹ = 51251591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51252107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3660858 + ... + 3660871.

It is an arithmetic number, because the mean of its divisors is an integer number (14643460).

Almost surely, 2^51252103 is an apocalyptic number.

51252103 is a deficient number, since it is larger than the sum of its proper divisors (7321737).

51252103 is an equidigital number, since it uses as much as digits as its factorization.

51252103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321736.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51252103 is about 7159.0574100226. The cubic root of 51252103 is about 371.4530226859.

Adding to 51252103 its reverse (30125215), we get a palindrome (81377318).

The spelling of 51252103 in words is "fifty-one million, two hundred fifty-two thousand, one hundred three".