51491301 has 8 divisors (see below), whose sum is σ = 68736864. Its totient is φ = 34286640.

The previous prime is 51491287. The next prime is 51491357. The reversal of 51491301 is 10319415.

51491301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51491301 - 2¹¹ = 51489253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51491371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7155 + ... + 12416.

It is an arithmetic number, because the mean of its divisors is an integer number (8592108).

Almost surely, 2^51491301 is an apocalyptic number.

It is an amenable number.

51491301 is a deficient number, since it is larger than the sum of its proper divisors (17245563).

51491301 is a wasteful number, since it uses less digits than its factorization.

51491301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20451.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 51491301 is about 7175.7439335584. The cubic root of 51491301 is about 372.0299938239.

The spelling of 51491301 in words is "fifty-one million, four hundred ninety-one thousand, three hundred one".