51057903 has 8 divisors (see below), whose sum is σ = 73313968. Its totient is φ = 31420224.

The previous prime is 51057901. The next prime is 51057911. The reversal of 51057903 is 30975015.

It is a happy number.

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

It is not a de Polignac number, because 51057903 - 2¹ = 51057901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654550 + ... + 654627.

It is an arithmetic number, because the mean of its divisors is an integer number (9164246).

Almost surely, 2^51057903 is an apocalyptic number.

51057903 is a deficient number, since it is larger than the sum of its proper divisors (22256065).

51057903 is a wasteful number, since it uses less digits than its factorization.

51057903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309193.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 51057903 is about 7145.4812993947. The cubic root of 51057903 is about 370.9832697342.

The spelling of 51057903 in words is "fifty-one million, fifty-seven thousand, nine hundred three".