51549103 has 4 divisors (see below), whose sum is σ = 52942360. Its totient is φ = 50155848.

The previous prime is 51549097. The next prime is 51549107. The reversal of 51549103 is 30194515.

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 51549103 - 2¹³ = 51540911 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 (51549107) 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, 696573 + ... + 696646.

It is an arithmetic number, because the mean of its divisors is an integer number (13235590).

Almost surely, 2^51549103 is an apocalyptic number.

51549103 is a deficient number, since it is larger than the sum of its proper divisors (1393257).

51549103 is a wasteful number, since it uses less digits than its factorization.

51549103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393256.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 51549103 is about 7179.7704002287. The cubic root of 51549103 is about 372.1691502495.

The spelling of 51549103 in words is "fifty-one million, five hundred forty-nine thousand, one hundred three".