51379903 has 4 divisors (see below), whose sum is σ = 51772248. Its totient is φ = 50987560.

The previous prime is 51379901. The next prime is 51379919. The reversal of 51379903 is 30997315.

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 51379903 - 2¹ = 51379901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51379901) 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, 195976 + ... + 196237.

It is an arithmetic number, because the mean of its divisors is an integer number (12943062).

Almost surely, 2^51379903 is an apocalyptic number.

51379903 is a deficient number, since it is larger than the sum of its proper divisors (392345).

51379903 is a wasteful number, since it uses less digits than its factorization.

51379903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392344.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 51379903 is about 7167.9776087820. The cubic root of 51379903 is about 371.7615127466.

The spelling of 51379903 in words is "fifty-one million, three hundred seventy-nine thousand, nine hundred three".