51333101 has 4 divisors (see below), whose sum is σ = 51648192. Its totient is φ = 51018012.

The previous prime is 51333067. The next prime is 51333109. The reversal of 51333101 is 10133315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10133315 = 5 ⋅2026663.

It is a cyclic number.

It is not a de Polignac number, because 51333101 - 2²² = 47138797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51333101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51333109) 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, 157301 + ... + 157626.

It is an arithmetic number, because the mean of its divisors is an integer number (12912048).

Almost surely, 2^51333101 is an apocalyptic number.

It is an amenable number.

51333101 is a deficient number, since it is larger than the sum of its proper divisors (315091).

51333101 is a wasteful number, since it uses less digits than its factorization.

51333101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315090.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 51333101 is about 7164.7122063625. The cubic root of 51333101 is about 371.6485991561.

Adding to 51333101 its reverse (10133315), we get a palindrome (61466416).

The spelling of 51333101 in words is "fifty-one million, three hundred thirty-three thousand, one hundred one".